Activate/Deactivate workflow and Discard Draft (#7022)

## Setup

This PR can be tested only if some feature flags have specific values:

- `IsWorkflowEnabled` equals `true`
- `IsQueryRunnerTwentyORMEnabled` equals `false`

These feature flags weren't committed to don't break other branches.

## What this PR brings

- Display buttons to activate and deactivate a workflow version and a
button to discard the current draft version. I also scaffolded a "Test"
button, which doesn't do anything for now.
- Wired the activate, deactivate and discard draft buttons to the
backend.
- Made it possible to "edit" active and deactivated versions by
automatically creating a new draft version when the user tries to edit
the version.
- Hide the "Discard Draft", button if the current version is not a draft
or is the first version ever created.
- On the backend, don't consider discarded drafts when checking if a new
draft version can be created.
- On the backend, disallow deleting the first created workflow version.
Otherwise, we will end up with a blank canvas in the front end, and it
will be impossible to recover from it.
- On the backend, disallow running deactivation steps if the workflow
version is not currently active. Previously, we were throwing, which is
unnecessary as it's a valid case.

## Spotted bugs that we must dive into

### Duplicate workflow versions in Apollo cache


https://github.com/user-attachments/assets/7cfffd06-11e0-417a-8da0-f9a5f43b84e2

---------

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

packages/twenty-front/src/modules/search/hooks/__tests__/useFilteredSearchEntityQuery.test.tsx

@@ -1,14 +1,14 @@
-import { ReactNode } from 'react';
 import { MockedProvider } from '@apollo/client/testing';
 import { renderHook } from '@testing-library/react';
+import { ReactNode } from 'react';
 import { RecoilRoot, useSetRecoilState } from 'recoil';
 
 import { currentWorkspaceMemberState } from '@/auth/states/currentWorkspaceMemberState';
 import { objectMetadataItemsState } from '@/object-metadata/states/objectMetadataItemsState';
-import { getObjectMetadataItemsMock } from '@/object-metadata/utils/getObjectMetadataItemsMock';
 import { EntitiesForMultipleEntitySelect } from '@/object-record/relation-picker/types/EntitiesForMultipleEntitySelect';
 import { SnackBarProviderScope } from '@/ui/feedback/snack-bar-manager/scopes/SnackBarProviderScope';
 
+import { generatedMockObjectMetadataItems } from '~/testing/mock-data/objectMetadataItems';
 import {
   query,
   responseData,
@@ -75,11 +75,9 @@ describe('useFilteredSearchEntityQuery', () => {
           locale: 'en',
         });
 
-        const mockObjectMetadataItems = getObjectMetadataItemsMock();
-
         const setMetadataItems = useSetRecoilState(objectMetadataItemsState);
 
-        setMetadataItems(mockObjectMetadataItems);
+        setMetadataItems(generatedMockObjectMetadataItems);
 
         return useFilteredSearchEntityQuery({
           orderByField: 'name',