Investigate memory leak (#19213)

In search for cache leak + Remove old instrumentation

packages/twenty-server/src/engine/twenty-orm/entity-manager/workspace-entity-manager.spec.ts

@@ -244,7 +244,6 @@ describe('WorkspaceEntityManager', () => {
         IS_DIRECT_GRAPHQL_EXECUTION_ENABLED: false,
         IS_RECORD_PAGE_LAYOUT_GLOBAL_EDITION_ENABLED: false,
         IS_CONNECTED_ACCOUNT_MIGRATED: false,
-        IS_GRAPHQL_QUERY_TIMING_ENABLED: false,
         IS_RECORD_TABLE_WIDGET_ENABLED: false,
         IS_DATASOURCE_MIGRATED: false,
         IS_COMMAND_MENU_ITEM_ENABLED: false,

packages/twenty-server/src/engine/twenty-orm/storage/promise-memoizer.storage.ts

@@ -95,6 +95,10 @@ export class PromiseMemoizer<T> {
     }
   }
 
+  getSize(): { cache: number; pending: number } {
+    return { cache: this.cache.size, pending: this.pending.size };
+  }
+
   async clearAll(onDelete?: (value: T) => Promise<void> | void): Promise<void> {
     for (const [, entry] of this.cache.entries()) {
       await onDelete?.(entry.value);