Refactor MultipleObjectsPicker component (#10552)

Refactor to only have MultipleRecordPicker and SingleRecordPicker

What's done:
- SingleRecordPicker, MultipleRecordPicker
- RelationToOneInput
- RelationFromManyInput
- usage in TableCell, InlineCell, RelationDetailSection, Workflow

What's left:
- Make a pass on the app, to make sure the hotkeyScopes, clickOutside
are properly set
- Fix flashing on ActivityTarget
- add more tests on the code

packages/twenty-front/src/modules/object-metadata/utils/getLabelIdentifierFieldValue.ts

@@ -17,7 +17,7 @@ export const getLabelIdentifierFieldValue = (
   }
 
   if (isDefined(labelIdentifierFieldMetadataItem?.name)) {
-    return String(record[labelIdentifierFieldMetadataItem.name]);
+    return record[labelIdentifierFieldMetadataItem.name];
   }
 
   return '';