Deprecate FieldMetadataInterface (#13264)

# Introduction

From the moment replaced the FieldMetadataInterface definition to:
```ts
import { FieldMetadataType } from 'twenty-shared/types';

import { FieldMetadataEntity } from 'src/engine/metadata-modules/field-metadata/field-metadata.entity';

export type FieldMetadataInterface<
  T extends FieldMetadataType = FieldMetadataType,
> = FieldMetadataEntity<T>;
```
After this PR merge will create a new one removing the type and
replacing it to `FieldMetadataEntity`.
Did not renamed it here to avoid conflicts on naming + type issues fixs
within the same PR

## Field metadata entity RELATION or MORPH
Relations fields cannot be null for those field metadata entity instance
anymore, but are never for the others see
`packages/twenty-server/src/engine/metadata-modules/field-metadata/types/field-metadata-entity-test.type.ts`
( introduced TypeScript tests )

## Concerns
- TS_VECTOR is the most at risk with the `generatedType` and
`asExpression` removal from interface

## What's next
- `FielMetadataInterface` removal and rename ( see introduction )
- Depcrecating `ObjectMetadataInterface`
- Refactor `FieldMetadataEntity` optional fiels to be nullable only
- TO DIG `never` occurences on settings, defaultValue etc
- Some interfaces will be replaced by the `FlatFieldMetadata` when
deprecating the current sync and comparators tools

packages/twenty-server/src/engine/workspace-manager/workspace-migration-v2/__tests__/get-flat-field-metadata.mock.ts

@@ -11,13 +11,14 @@ type FlatFieldMetadataOverrides<
   Partial<FlatFieldMetadata<T>>;
 
 export const getFlatFieldMetadataMock = <
-  T extends FieldMetadataType = FieldMetadataType,
+  T extends FieldMetadataType = FieldMetadataType.TEXT,
 >(
   overrides: FlatFieldMetadataOverrides<T>,
 ): FlatFieldMetadata<T> => {
   const createdAt = faker.date.anytime();
 
   return {
+    type: FieldMetadataType.TEXT as T,
     createdAt,
     description: 'default flat field metadata description',
     icon: 'icon',
@@ -28,15 +29,18 @@ export const getFlatFieldMetadataMock = <
     label: 'flat field metadata label',
     isNullable: true,
     isUnique: false,
-    relationTargetFieldMetadataId: undefined,
-    relationTargetObjectMetadataId: undefined,
-    type: FieldMetadataType.TEXT as T,
     isLabelSyncedWithName: false,
     isSystem: false,
-    standardId: undefined,
+    standardId: null,
     standardOverrides: undefined,
     updatedAt: createdAt,
     workspaceId: faker.string.uuid(),
+    defaultValue: null,
+    options: null,
+    relationTargetFieldMetadata: undefined as never,
+    relationTargetFieldMetadataId: undefined as never,
+    relationTargetObjectMetadata: undefined as never,
+    relationTargetObjectMetadataId: undefined as never,
     ...overrides,
   };
 };

packages/twenty-server/src/engine/workspace-manager/workspace-migration-v2/types/flat-field-metadata.ts

@@ -11,8 +11,6 @@ type FieldMetadataEntityRelationProperties =
   >;
 
 export type FlatFieldMetadata<T extends FieldMetadataType = FieldMetadataType> =
-  Partial<
-    Omit<FieldMetadataEntity<T>, FieldMetadataEntityRelationProperties>
-  > & {
+  Omit<FieldMetadataEntity<T>, FieldMetadataEntityRelationProperties> & {
     uniqueIdentifier: string;
   };

packages/twenty-server/src/engine/workspace-manager/workspace-migration-v2/workspace-migration-builder-v2/__tests__/common/workspace-migration-builder-field-test-case.ts

@@ -104,20 +104,19 @@ const relationTestCases: WorkspaceMigrationBuilderTestCase[] = [
     context: {
       input: () => {
         const objectMetadataId = faker.string.uuid();
-        const updatedFieldMetadata =
-          getFlatFieldMetadataMock<FieldMetadataType.RELATION>({
-            uniqueIdentifier: 'field-metadata-unique-identifier-1',
-            objectMetadataId,
-            type: FieldMetadataType.RELATION,
-            settings: {
-              relationType: RelationType.MANY_TO_ONE,
-              isForeignKey: true,
-              joinColumnName: 'column-name',
-              onDelete: undefined,
-            },
-            relationTargetFieldMetadataId: faker.string.uuid(),
-            relationTargetObjectMetadataId: faker.string.uuid(),
-          });
+        const updatedFieldMetadata = getFlatFieldMetadataMock({
+          uniqueIdentifier: 'field-metadata-unique-identifier-1',
+          objectMetadataId,
+          type: FieldMetadataType.RELATION,
+          settings: {
+            relationType: RelationType.MANY_TO_ONE,
+            isForeignKey: true,
+            joinColumnName: 'column-name',
+            onDelete: undefined,
+          },
+          relationTargetFieldMetadataId: faker.string.uuid(),
+          relationTargetObjectMetadataId: faker.string.uuid(),
+        });
         const flatObjectMetadata = getFlatObjectMetadataMock({
           uniqueIdentifier: 'object-metadata-unique-identifier-1',
           isLabelSyncedWithName: true,
@@ -130,7 +129,7 @@ const relationTestCases: WorkspaceMigrationBuilderTestCase[] = [
             {
               ...flatObjectMetadata,
               flatFieldMetadatas: [
-                {
+                getFlatFieldMetadataMock({
                   ...updatedFieldMetadata,
                   settings: {
                     relationType: RelationType.ONE_TO_MANY,
@@ -140,7 +139,7 @@ const relationTestCases: WorkspaceMigrationBuilderTestCase[] = [
                   },
                   relationTargetFieldMetadataId: faker.string.uuid(),
                   relationTargetObjectMetadataId: faker.string.uuid(),
-                },
+                }),
               ],
             },
           ],