Add local only cache to cache service and cache typeorm entity metadata (#16287)

## Problem

buildEntityMetadatas in GlobalWorkspaceOrmManager is computationally
expensive and was running on every executeInWorkspaceContext call. This
method uses
TypeORM's EntitySchemaTransformer and EntityMetadataBuilder to build
metadata for all workspace entities (30-50+ objects with many fields
each).

The resulting EntityMetadata[] is not serialisable which means it cannot
be cached in Redis because they contain:
- Circular references
- Functions/methods
- References to the DataSource instance

## Solution

Extended the workspace cache system to support local-only caching, then
created a cache provider for entityMetadatas.

## Implementation details
Updated @WorkspaceCache decorator (workspace-cache.decorator.ts)
- Added localOnly?: boolean option to skip Redis storage for
non-serializable data
Created WorkspaceEntityMetadatasCacheService
- Computes entity metadatas from DB to avoid race condition, this is
acceptable
Simplified GlobalWorkspaceOrmManager
- Now fetches entityMetadatas from cache instead of rebuilding on every
call
Updated Workspace migration runner - the only entry point where metadata
can change
- Now invalidate the new 'entityMetadata' local cache when
shouldIncrementMetadataGraphqlSchemaVersion is true (== field/object
mutations)

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

@@ -1,8 +1,6 @@
 import { type Milliseconds } from 'cache-manager';
 import { isDefined } from 'twenty-shared/utils';
 
-import { NodeEnvironment } from 'src/engine/core-modules/twenty-config/interfaces/node-environment.interface';
-
 import { type CacheKey } from 'src/engine/twenty-orm/storage/types/cache-key.type';
 
 type AsyncFactoryCallback<T> = () => Promise<T | null>;
@@ -39,13 +37,6 @@ export class PromiseMemoizer<T> {
       return existingPromise;
     }
 
-    if (process.env.NODE_ENV !== NodeEnvironment.TEST) {
-      // eslint-disable-next-line no-console
-      console.log(
-        `Computing new Datasource for cacheKey: ${cacheKey} out of ${this.cache.size}`,
-      );
-    }
-
     const newPromise = (async () => {
       try {
         const value = await factory();