common api - null equivalence (#15926)

closes https://github.com/twentyhq/core-team-issues/issues/1629

To do before requesting review : 
- filter update

Migration to come in an other PR


Strat : 
1/  Null transformation

- [x] Transform NULL equivalent value to NULL in field validation in
common api - pre-query - with feature flag
- [ ] Same logic in ORM (Not done, complex to handle feature flag here)
- [x] Transform NULL value to equivalent in data formatting in ORM -
post-query

2/ Migration (in other PR) for fieldMetadata not nullable with default
defaultValue (empty string, ...)

- [ ] Remove NOT NULL db constraint
- [ ] Update record value to NULL
- [ ] Update field metadata : isNullable:true
- [ ] Update uniqueIndex whereClause (also for standard uniqueIndex) 
- [ ] Activate feature flag

3/ Update metadata creation

- [x] No more default default value
- [x] Update standard field nullability
- [x] Remove index default whereClause for standard field

4/ Update filter

- [x] When filtering on NULL or empty string, be sure all records are
returned (the one with NULL + the one with "")

5/ Test

- [ ] Strat. to do

packages/twenty-server/src/modules/attachment/standard-objects/attachment.workspace-entity.ts

@@ -1,8 +1,8 @@
 import { msg } from '@lingui/core/macro';
 import {
+  ActorMetadata,
   FieldMetadataType,
   RelationOnDeleteAction,
-  ActorMetadata,
 } from 'twenty-shared/types';
 import { STANDARD_OBJECT_IDS } from 'twenty-shared/metadata';
 
@@ -68,6 +68,7 @@ export class AttachmentWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`Attachment type (deprecated - use fileCategory)`,
     icon: 'IconList',
   })
+  @WorkspaceIsNullable()
   type: string;
 
   @WorkspaceField({

packages/twenty-server/src/modules/company/standard-objects/company.workspace-entity.ts

@@ -1,10 +1,10 @@
 import { msg } from '@lingui/core/macro';
 import {
-  FieldMetadataType,
-  RelationOnDeleteAction,
   ActorMetadata,
   AddressMetadata,
+  FieldMetadataType,
   LinksMetadata,
+  RelationOnDeleteAction,
   type CurrencyMetadata,
 } from 'twenty-shared/types';
 import { STANDARD_OBJECT_IDS } from 'twenty-shared/metadata';
@@ -30,8 +30,8 @@ import { WorkspaceRelation } from 'src/engine/twenty-orm/decorators/workspace-re
 import { COMPANY_STANDARD_FIELD_IDS } from 'src/engine/workspace-manager/workspace-sync-metadata/constants/standard-field-ids';
 import { STANDARD_OBJECT_ICONS } from 'src/engine/workspace-manager/workspace-sync-metadata/constants/standard-object-icons';
 import {
-  type FieldTypeAndNameMetadata,
   getTsVectorColumnExpressionFromFields,
+  type FieldTypeAndNameMetadata,
 } from 'src/engine/workspace-manager/workspace-sync-metadata/utils/get-ts-vector-column-expression.util';
 import { AttachmentWorkspaceEntity } from 'src/modules/attachment/standard-objects/attachment.workspace-entity';
 import { FavoriteWorkspaceEntity } from 'src/modules/favorite/standard-objects/favorite.workspace-entity';
@@ -71,6 +71,7 @@ export class CompanyWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`The company name`,
     icon: 'IconBuildingSkyscraper',
   })
+  @WorkspaceIsNullable()
   name: string;
 
   @WorkspaceField({
@@ -84,6 +85,7 @@ export class CompanyWorkspaceEntity extends BaseWorkspaceEntity {
     },
   })
   @WorkspaceIsUnique()
+  @WorkspaceIsNullable()
   domainName: LinksMetadata;
 
   @WorkspaceField({

packages/twenty-server/src/modules/note/standard-objects/note.workspace-entity.ts

@@ -1,8 +1,8 @@
 import { msg } from '@lingui/core/macro';
 import {
+  ActorMetadata,
   FieldMetadataType,
   RelationOnDeleteAction,
-  ActorMetadata,
   type RichTextV2Metadata,
 } from 'twenty-shared/types';
 import { STANDARD_OBJECT_IDS } from 'twenty-shared/metadata';
@@ -71,6 +71,7 @@ export class NoteWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`Note title`,
     icon: 'IconNotes',
   })
+  @WorkspaceIsNullable()
   title: string;
 
   @WorkspaceField({

packages/twenty-server/src/modules/opportunity/standard-objects/opportunity.workspace-entity.ts

@@ -1,9 +1,9 @@
 import { msg } from '@lingui/core/macro';
 import {
-  FieldMetadataType,
-  RelationOnDeleteAction,
   ActorMetadata,
   type CurrencyMetadata,
+  FieldMetadataType,
+  RelationOnDeleteAction,
 } from 'twenty-shared/types';
 import { STANDARD_OBJECT_IDS } from 'twenty-shared/metadata';
 
@@ -63,6 +63,7 @@ export class OpportunityWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`The opportunity name`,
     icon: 'IconTargetArrow',
   })
+  @WorkspaceIsNullable()
   name: string;
 
   @WorkspaceField({

packages/twenty-server/src/modules/person/standard-objects/person.workspace-entity.ts

@@ -1,10 +1,10 @@
 import { msg } from '@lingui/core/macro';
 import {
-  FieldMetadataType,
-  RelationOnDeleteAction,
   ActorMetadata,
   EmailsMetadata,
+  FieldMetadataType,
   PhonesMetadata,
+  RelationOnDeleteAction,
   type FullNameMetadata,
   type LinksMetadata,
 } from 'twenty-shared/types';
@@ -31,8 +31,8 @@ import { WorkspaceRelation } from 'src/engine/twenty-orm/decorators/workspace-re
 import { PERSON_STANDARD_FIELD_IDS } from 'src/engine/workspace-manager/workspace-sync-metadata/constants/standard-field-ids';
 import { STANDARD_OBJECT_ICONS } from 'src/engine/workspace-manager/workspace-sync-metadata/constants/standard-object-icons';
 import {
-  type FieldTypeAndNameMetadata,
   getTsVectorColumnExpressionFromFields,
+  type FieldTypeAndNameMetadata,
 } from 'src/engine/workspace-manager/workspace-sync-metadata/utils/get-ts-vector-column-expression.util';
 import { AttachmentWorkspaceEntity } from 'src/modules/attachment/standard-objects/attachment.workspace-entity';
 import { CalendarEventParticipantWorkspaceEntity } from 'src/modules/calendar/common/standard-objects/calendar-event-participant.workspace-entity';
@@ -96,6 +96,7 @@ export class PersonWorkspaceEntity extends BaseWorkspaceEntity {
     },
   })
   @WorkspaceIsUnique()
+  @WorkspaceIsNullable()
   emails: EmailsMetadata;
 
   @WorkspaceField({
@@ -125,6 +126,7 @@ export class PersonWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`Contact’s job title`,
     icon: 'IconBriefcase',
   })
+  @WorkspaceIsNullable()
   jobTitle: string;
 
   @WorkspaceField({
@@ -147,6 +149,7 @@ export class PersonWorkspaceEntity extends BaseWorkspaceEntity {
       maxNumberOfValues: 1,
     },
   })
+  @WorkspaceIsNullable()
   phones: PhonesMetadata;
 
   @WorkspaceField({
@@ -156,6 +159,7 @@ export class PersonWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`Contact’s city`,
     icon: 'IconMap',
   })
+  @WorkspaceIsNullable()
   city: string;
 
   @WorkspaceField({
@@ -166,6 +170,7 @@ export class PersonWorkspaceEntity extends BaseWorkspaceEntity {
     icon: 'IconFileUpload',
   })
   @WorkspaceIsSystem()
+  @WorkspaceIsNullable()
   avatarUrl: string;
 
   @WorkspaceField({

packages/twenty-server/src/modules/task/standard-objects/task.workspace-entity.ts

@@ -1,8 +1,8 @@
 import { msg } from '@lingui/core/macro';
 import {
+  ActorMetadata,
   FieldMetadataType,
   RelationOnDeleteAction,
-  ActorMetadata,
   type RichTextV2Metadata,
 } from 'twenty-shared/types';
 import { STANDARD_OBJECT_IDS } from 'twenty-shared/metadata';
@@ -74,6 +74,7 @@ export class TaskWorkspaceEntity extends BaseWorkspaceEntity {
     description: msg`Task title`,
     icon: 'IconNotes',
   })
+  @WorkspaceIsNullable()
   title: string;
 
   @WorkspaceField({