Refactor metadata caching (#7011)

This PR introduces the following changes:
- add the metadataVersion to all our metadata cache keys to ease
troubleshooting:
<img width="1146" alt="image"
src="https://github.com/user-attachments/assets/8427805b-e07f-465e-9e69-1403652c8b12">
- introduce a cache recompute lock to avoid overloading the database to
recompute the cache many time

packages/twenty-server/src/engine/api/graphql/graphql-query-runner/errors/graphql-query-runner.exception.ts

@@ -19,4 +19,5 @@ export enum GraphqlQueryRunnerExceptionCode {
   RECORD_NOT_FOUND = 'RECORD_NOT_FOUND',
   INVALID_ARGS_FIRST = 'INVALID_ARGS_FIRST',
   INVALID_ARGS_LAST = 'INVALID_ARGS_LAST',
+  METADATA_CACHE_VERSION_NOT_FOUND = 'METADATA_CACHE_VERSION_NOT_FOUND',
 }