feat: simplification of default-value specification in FieldMetadata (#4592)

* feat: wip refactor default-value

* feat: health check to migrate default value

* fix: tests

* fix: refactor defaultValue to make it more clean

* fix: unit tests

* fix: front-end default value

packages/twenty-server/src/modules/messaging/standard-objects/message.object-metadata.ts

@@ -55,7 +55,7 @@ export class MessageObjectMetadata extends BaseObjectMetadata {
       { value: 'incoming', label: 'Incoming', position: 0, color: 'green' },
       { value: 'outgoing', label: 'Outgoing', position: 1, color: 'blue' },
     ],
-    defaultValue: { value: 'incoming' },
+    defaultValue: "'incoming'",
   })
   direction: string;