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/navigation/hooks/__tests__/useDefaultHomePagePath.test.ts

@@ -4,16 +4,17 @@ import { RecoilRoot, useSetRecoilState } from 'recoil';
 import { currentUserState } from '@/auth/states/currentUserState';
 import { useDefaultHomePagePath } from '@/navigation/hooks/useDefaultHomePagePath';
 import { objectMetadataItemsState } from '@/object-metadata/states/objectMetadataItemsState';
-import {
-  COMPANY_OBJECT_METADATA_ID,
-  getObjectMetadataItemsMock,
-} from '@/object-metadata/utils/getObjectMetadataItemsMock';
 import { usePrefetchedData } from '@/prefetch/hooks/usePrefetchedData';
 import { AppPath } from '@/types/AppPath';
+import { generatedMockObjectMetadataItems } from '~/testing/mock-data/objectMetadataItems';
 import { mockedUserData } from '~/testing/mock-data/users';
 
 jest.mock('@/prefetch/hooks/usePrefetchedData');
 const setupMockPrefetchedData = (viewId?: string) => {
+  const companyObjectMetadata = generatedMockObjectMetadataItems.find(
+    (item) => item.nameSingular === 'company',
+  );
+
   jest.mocked(usePrefetchedData).mockReturnValue({
     isDataPrefetched: true,
     records: viewId
@@ -21,7 +22,7 @@ const setupMockPrefetchedData = (viewId?: string) => {
           {
             id: viewId,
             __typename: 'object',
-            objectMetadataId: COMPANY_OBJECT_METADATA_ID,
+            objectMetadataId: companyObjectMetadata?.id,
           },
         ]
       : [],
@@ -36,7 +37,7 @@ const renderHooks = (withCurrentUser: boolean) => {
         objectMetadataItemsState,
       );
 
-      setObjectMetadataItems(getObjectMetadataItemsMock());
+      setObjectMetadataItems(generatedMockObjectMetadataItems);
 
       if (withCurrentUser) {
         setCurrentUser(mockedUserData);