Remove dead code from legacy metadataVersion cache mechanism (#23122)

- Drop unused setORMEntitySchema/getORMEntitySchema from
WorkspaceCacheStorageService
- Drop MetadataObjectMetadataMaps cache key, only referenced by the
flush loop
- Drop never-populated workspaceMetadataVersion field from workspace
auth context type and builders
- Drop unthrown TwentyORMExceptionCode.METADATA_VERSION_MISMATCH
- Drop unused WorkspaceMetadataVersionModule imports in field-metadata
and object-metadata modules

<!-- This is an auto-generated description by cubic. -->
<a
href="https://cubic.dev/pr/twentyhq/twenty/pull/23122?utm_source=github"
target="_blank" rel="noopener noreferrer"
data-no-image-dialog="true"><picture><source
media="(prefers-color-scheme: dark)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"><source
media="(prefers-color-scheme: light)"
srcset="https://www.cubic.dev/buttons/review-in-cubic-light.svg"><img
alt="Review in cubic"
src="https://www.cubic.dev/buttons/review-in-cubic-dark.svg"></picture></a>
<!-- End of auto-generated description by cubic. -->

packages/twenty-server/src/engine/twenty-orm/exceptions/twenty-orm.exception.ts

@@ -6,7 +6,6 @@ import { STANDARD_ERROR_MESSAGE } from 'src/engine/api/common/common-query-runne
 import { CustomException } from 'src/utils/custom-exception';
 
 export enum TwentyORMExceptionCode {
-  METADATA_VERSION_MISMATCH = 'METADATA_VERSION_MISMATCH',
   WORKSPACE_SCHEMA_NOT_FOUND = 'WORKSPACE_SCHEMA_NOT_FOUND',
   ROLES_PERMISSIONS_VERSION_NOT_FOUND = 'ROLES_PERMISSIONS_VERSION_NOT_FOUND',
   FEATURE_FLAG_MAP_VERSION_NOT_FOUND = 'FEATURE_FLAG_MAP_VERSION_NOT_FOUND',
@@ -33,8 +32,6 @@ const getTwentyORMExceptionUserFriendlyMessage = (
   code: TwentyORMExceptionCode,
 ) => {
   switch (code) {
-    case TwentyORMExceptionCode.METADATA_VERSION_MISMATCH:
-      return msg`Data version mismatch. Please refresh and try again.`;
     case TwentyORMExceptionCode.WORKSPACE_SCHEMA_NOT_FOUND:
       return msg`Workspace schema not found.`;
     case TwentyORMExceptionCode.ROLES_PERMISSIONS_VERSION_NOT_FOUND: