Finish Implementing Select/MultiSelect #3166 (#3226)

* Fixed #3166

* refactor: improve generateEmptyFieldValue function

- Optimize handling of MultiSelect and Select cases
- Provide a default value for Select based on FieldSelectValue
- Enhance code readability and maintainability

* Fixed #3166

- Introduce MultiSelect-specific logic with a backend support check
- Implement Select-specific logic with a default value
- Throw an error for unhandled FieldMetadataType

---------

Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/object-record/utils/generateEmptyFieldValue.ts

@@ -41,9 +41,6 @@ export const generateEmptyFieldValue = (
     case FieldMetadataType.Relation: {
       return null;
     }
-    case FieldMetadataType.Select: {
-      return null;
-    }
     case FieldMetadataType.Currency: {
       return {
         amountMicros: null,
@@ -51,9 +48,14 @@ export const generateEmptyFieldValue = (
         __typename: 'Currency',
       };
     }
-
+    case FieldMetadataType.Select: {
+      return null;
+    }
     case FieldMetadataType.MultiSelect: {
       throw new Error('Not implemented yet');
     }
+    default: {
+      throw new Error('Unhandled FieldMetadataType');
+    }
   }
 };