Fix: Remove default value for name field in CustomWorkspaceEntity (#9805) (#9824)

### Summary
This pull request addresses issue #9805 by removing the default value
`'Untitled'` for the `name` field in the `CustomWorkspaceEntity` class.

### Details
- Removed the default value `'Untitled'` for the `name` field.
- This change ensures that new records do not have an empty or default
name.
- Ensures consistency across different standard object records.

### Issue
This pull request resolves issue #9805.

### Testing
Tested the creation of new records to ensure that the `name` field is
now correctly handled without a default value.

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-server/src/engine/twenty-orm/custom.workspace-entity.ts

@@ -43,7 +43,6 @@ export class CustomWorkspaceEntity extends BaseWorkspaceEntity {
     description: 'Name',
     type: FieldMetadataType.TEXT,
     icon: 'IconAbc',
-    defaultValue: "'Untitled'",
   })
   name: string;