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-apps/community/meeting-transcript/serverlessFunctions/process-transcript/src/index.ts

@@ -32,7 +32,7 @@ type AnalysisResult = {
   commitments: Commitment[];
 };
 
-type RichTextV2Data = {
+type RichTextData = {
   markdown: string;
   blocknote: null;
 };
@@ -362,7 +362,7 @@ const createNoteInTwenty = async (
     bodyV2: {
       markdown: noteBodyMarkdown,
       blocknote: null,
-    } satisfies RichTextV2Data,
+    } satisfies RichTextData,
   };
 
   try {
@@ -451,7 +451,7 @@ const createTaskInTwenty = async (
 
   const taskData: {
     title: string;
-    bodyV2: RichTextV2Data;
+    bodyV2: RichTextData;
     dueAt?: string;
     assigneeId?: string;
   } = {