[BUG] Record settings not saved (#9762)

# Introduction
By initially fixing this Fixes #9381, discovered other behavior that
have been fix.
Overall we encountered a bug that corrupts a workspace and make the
browser + api crash
This issue https://github.com/twentyhq/core-team-issues/issues/25
suggests a refactor that has final save button instead of auto-save

## `labelIdentifierFieldMetadataId` form default value
The default value resulted in being undefined, resulting in react hook
form `labelIdentifierFieldMetadataId` is required field error.

### Fix
Setting default value fallback to `null`  as field is `nullable`

## `SettingsDataModelObjectSettingsFormCard` never triggers form
Unless I'm mistaken in production touching any fields within
`SettingsDataModelObjectSettingsFormCard` would never trigger form
submission until you also modify `SettingsDataModelObjectAboutForm`
fields

### Fix
Provide and apply `onblur` that triggers the form on both
`SettingsDataModelObjectSettingsFormCard` inputs

## Wrong default `labelIdentifierFieldMetadataItem` on first page render
When landing on the page for the first time, if a custom
`labelIdentifierFieldMetadataItem` has been set it won't be computed
within the `PreviewCard`.
Occurs when `labelIdentifierFieldMetadataId` form default value is
undefined, due to `any` injection.

### Fix
In the `getLabelIdentifierFieldMetadataItem` check the
`labelIdentifierFieldMetadataIdFormValue` definition, if undefined
fallback to current `objectMetadata` identifier

---------

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

packages/twenty-front/src/testing/mock-data/generated/mock-metadata-query-result.ts

@@ -2868,7 +2868,7 @@ export const mockedStandardObjectMetadataQueryResult: ObjectMetadataItemsQuery =
                         "isSystem": false,
                         "createdAt": "2024-11-06T08:55:38.993Z",
                         "updatedAt": "2024-11-06T08:55:38.993Z",
-                        "labelIdentifierFieldMetadataId": null,
+                        "labelIdentifierFieldMetadataId": "7896a006-eb14-481e-8197-661b7009a22e",
                         "imageIdentifierFieldMetadataId": null,
                         "shortcut": null,
                         "isLabelSyncedWithName": false,