Add editor mode for text field widgets (#20779)

## Summary

Tested ↓

<img width="3456" height="1990" alt="CleanShot 2026-05-20 at 21 14
04@2x"
src="https://github.com/user-attachments/assets/b4e0d3d3-715f-4ad7-bd03-e8e1922b3c6c"
/>


- Enable `FieldDisplayMode.EDITOR` for plain `TEXT` field widgets while
keeping `FIELD` as the default display mode.
- Add a plain multiline text editor renderer for `TEXT + EDITOR` field
widgets with optimistic record-store/cache updates and debounced
persistence.
- Reuse the shared `TextArea` component through a transparent, uncapped
variant so the editor has no input chrome and lets the widget grow.
- Add unit coverage for text display-mode config and a Storybook
scenario for a text field widget in editor mode.

## useEffect cleanup note

`FieldWidgetTextEditor` flushes the debounced persist callback in a
`useEffect` cleanup:

```ts
useEffect(() => () => persistTextDebounced.flush(), [persistTextDebounced]);
```

This follows the existing debounced autosave cleanup pattern already
used in `WorkflowEditActionHttpRequest`. It ensures pending text changes
are persisted when the widget unmounts, while `onBlur` still flushes
immediately for normal editor exits.

## Validation

- `npx nx test twenty-front --testPathPattern=page-layout`
- `npx nx typecheck twenty-front`
- `npx nx lint twenty-front`
- Browser check on
`http://apple.localhost:3001/object/company/20202020-a305-41e7-8c72-ba44072a4c58`
for transparent textarea, no internal max-height/scroll, equal padding,
and widget growth.

Note: lint passes with two unrelated existing warnings in
`NavigationDrawerItem.tsx` and `ConfigVariableEdit.tsx`.

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/settings/developers/components/SettingsDevelopersWebhookForm.tsx

@@ -135,6 +135,7 @@ export const SettingsDevelopersWebhookForm = ({
                   textAreaId={descriptionTextAreaId}
                   placeholder={t`Write a description`}
                   minRows={4}
+                  maxRows={5}
                   value={value || ''}
                   onChange={onChange}
                 />