[TEST] Covering useDeleteOne relations optimistic cache behavior (#10238)

## Introduction
Added coverage on the `useDeleteOneRecord` hooks, especially its
optimistic behavior feature.
Introduced a new testing tool `InMemoryTestingCacheInstance` that has
builtin very basic expectors in order to avoid future duplication when
covering others record hooks `update, create, destroy` etc etc

## Notes
Added few comments in this PR regarding some builtin functions I've
created around companies and people mocked object model and that I think
could be cool to spread and centralize within a dedicated "class
template"

Also put in light that unless I'm mistaken some tests are running on
`RecordNode` and not `RecordObject`

Took few directions on my own that as I always I would suggestion nor
remarks on them !

Let me know

## Misc
- Should we refactor `useDeleteOneRecord` tests to follow `eachTesting`
pattern ? => I feel like this is inappropriate as this hooks is already
high level, the only plus value would be less tests code despite
readability IMO

packages/twenty-front/src/pages/object-record/__stories__/RecordShowPage.stories.tsx

@@ -8,13 +8,15 @@ import {
   PageDecoratorArgs,
 } from '~/testing/decorators/PageDecorator';
 import { graphqlMocks } from '~/testing/graphqlMocks';
-import { getPeopleMock, peopleQueryResult } from '~/testing/mock-data/people';
+import {
+  allMockPersonRecords,
+  peopleQueryResult,
+} from '~/testing/mock-data/people';
 import { mockedWorkspaceMemberData } from '~/testing/mock-data/users';
 
 import { RecordShowPage } from '../RecordShowPage';
 
-const peopleMock = getPeopleMock();
-
+const personRecord = allMockPersonRecords[0];
 const meta: Meta<PageDecoratorArgs> = {
   title: 'Pages/ObjectRecord/RecordShowPage',
   component: RecordShowPage,
@@ -22,7 +24,7 @@ const meta: Meta<PageDecoratorArgs> = {
     routePath: '/object/:objectNameSingular/:objectRecordId',
     routeParams: {
       ':objectNameSingular': 'person',
-      ':objectRecordId': peopleMock[0].id,
+      ':objectRecordId': personRecord.id,
     },
   },
   parameters: {
@@ -36,7 +38,7 @@ const meta: Meta<PageDecoratorArgs> = {
         graphql.query('FindOnePerson', () => {
           return HttpResponse.json({
             data: {
-              person: peopleMock[0],
+              person: personRecord,
             },
           });
         }),