feat: rename RICH_TEXT_V2 → RICH_TEXT in codebase (keep DB value) (#18628)

## Summary

- Renames the `FieldMetadataType` enum key from `RICH_TEXT_V2` to
`RICH_TEXT` across the entire codebase, while keeping the underlying
string value as `'RICH_TEXT_V2'` to maintain PostgreSQL database
compatibility
- Renames all related types, guards, hooks, components, and files from
`*RichTextV2*` / `*rich-text-v2*` to `*RichText*` / `*rich-text*` (e.g.
`FormRichTextV2FieldInput` → `FormRichTextFieldInput`,
`isFieldRichTextV2` → `isFieldRichText`)
- Updates generated files (GraphQL schema, SDK types) to use the new key
while preserving the `RICH_TEXT_V2` string value for DB/API layer
- Updates i18n locale files, test snapshots, and integration tests to
reflect the rename

## Context

The legacy `RICH_TEXT` (V1) field type was deprecated and migrated to
`TEXT` in a previous PR (#18623). With V1 gone, the `RICH_TEXT_V2`
naming is no longer necessary — `RICH_TEXT` is now the canonical name.
The DB enum value stays `'RICH_TEXT_V2'` to avoid confusion with the
just-deprecated V1 type and to prevent a database migration.

## Test plan

- [x] `twenty-server` typecheck passes
- [x] `twenty-front` typecheck passes (only pre-existing Apollo client
errors remain)
- [x] `twenty-server` lint passes
- [x] `twenty-front` lint passes
- [x] `twenty-shared` build passes
- [ ] CI passes


Made with [Cursor](https://cursor.com)

packages/twenty-front/src/modules/workflow/workflow-steps/filters/components/WorkflowStepFilterFieldSelect.tsx

@@ -22,7 +22,7 @@ type WorkflowStepFilterFieldSelectProps = {
 };
 
 const NON_SELECTABLE_FIELD_TYPES = [
-  FieldMetadataType.RICH_TEXT_V2,
+  FieldMetadataType.RICH_TEXT,
   FieldMetadataType.RATING,
 ];
 

packages/twenty-front/src/modules/workflow/workflow-steps/filters/components/WorkflowStepFilterValueInput.tsx

@@ -59,7 +59,7 @@ const isFilterableFieldType = (
     FieldMetadataType.SELECT,
     FieldMetadataType.MULTI_SELECT,
     FieldMetadataType.RAW_JSON,
-    FieldMetadataType.RICH_TEXT_V2,
+    FieldMetadataType.RICH_TEXT,
     FieldMetadataType.ARRAY,
     FieldMetadataType.UUID,
     FieldMetadataType.RELATION,

packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/utils/shouldDisplayFormField.ts

@@ -22,7 +22,7 @@ const SUPPORTED_FORM_FIELD_TYPES = [
   FieldMetadataType.UUID,
   FieldMetadataType.ARRAY,
   FieldMetadataType.RELATION,
-  FieldMetadataType.RICH_TEXT_V2,
+  FieldMetadataType.RICH_TEXT,
 ];
 
 export const shouldDisplayFormField = ({