fix(front): enable Save when a select option is added programmatically (#24649)

Fixes #23487

## Problem
When a new select option is added from within a record cell's select
menu (e.g., "Add ... to options"), the user is directed to the field
configuration in the data model editor. The new option is already
populated in the options list, but the **Save button remains
disabled/stale**. Any subsequent manual edit makes it clickable.

## Root Cause
The `canSave` condition in `SettingsObjectFieldEdit.tsx` requires
`isDirty && isValid && !isSubmitting`. The form uses React Hook Form
with `mode: 'onTouched'`.

When options are programmatically inserted via `setFormValue('options',
...)`, the call only passed `{ shouldDirty: true }` but **not** `{
shouldValidate: true }`. This meant:
- ✅ `isDirty` was correctly set to `true`
- ❌ `isValid` was **never recalculated** from its initial unresolved
state
- Result: Save button stayed disabled

## Fix
Added `shouldValidate: true` alongside `shouldDirty: true` in all three
programmatic option insertion paths in
`SettingsDataModelFieldSelectForm.tsx`:

1. **URL-driven `newOption` effect** (useEffect) — the primary bug path
reported in the issue
2. **`handleAddOption`** — "Add option" button click
3. **`handleInputEnter`** — Enter key handler in option row

This ensures the form validity state is immediately recalculated when
options are programmatically added, making the Save button immediately
clickable.


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