[Refactor] Activity morph: first phase (#1075)

* Add company and person on update and create

* Enable reading with error management on commentable ID

* [CHECKPOINT] backward-compatible

* Migrate data for activity targets

* Revert "Migrate data for activity targets"

This reverts commit f89bc30689655c83cd5370331fec41b59d03fdb9.

---------

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

front/src/modules/activities/hooks/useHandleCheckableActivityTargetChange.ts

@@ -6,6 +6,7 @@ import { GET_PEOPLE } from '@/people/queries';
 import {
   Activity,
   ActivityTarget,
+  CommentableType,
   useAddActivityTargetsOnActivityMutation,
   useRemoveActivityTargetsOnActivityMutation,
 } from '~/generated/graphql';
@@ -65,6 +66,10 @@ export function useHandleCheckableActivityTargetChange({
             createdAt: new Date().toISOString(),
             commentableType: entity.entityType,
             commentableId: entity.id,
+            companyId:
+              entity.entityType === CommentableType.Company ? entity.id : null,
+            personId:
+              entity.entityType === CommentableType.Person ? entity.id : null,
           })),
         },
       });