fix(server): skip standard page layout widgets referencing missing field metadatas during 1.23 backfill (#19825)

## Summary

The 1.23 backfill command (`upgrade:1-23:backfill-record-page-layouts`)
creates standard page layout widgets from `STANDARD_PAGE_LAYOUTS`. Some
widgets reference field metadatas via `universalConfiguration` (e.g. the
`opportunity.owner` FIELD widget pointing at universal identifier
`20202020-be7e-4d1e-8e19-3d5c7c4b9f2a`).

If a workspace's matching field metadata does not exist or has a
different universal identifier (e.g. older workspaces created before
standard universal identifiers were backfilled), the runner throws

```
Field metadata not found for universal identifier: 20202020-be7e-4d1e-8e19-3d5c7c4b9f2a
```

and the entire migration for that workspace aborts. This was the
underlying cause behind the `Migration action 'create' for
'pageLayoutWidget' failed` error surfaced by #19823.

packages/twenty-server/src/database/commands/upgrade-version-command/1-23/1-23-workspace-command-1780000001500-backfill-record-page-layouts.command.ts

@@ -15,6 +15,7 @@ import { type FlatPageLayout } from 'src/engine/metadata-modules/flat-page-layou
 import { computeFlatDefaultRecordPageLayoutToCreate } from 'src/engine/metadata-modules/object-metadata/utils/compute-flat-default-record-page-layout-to-create.util';
 import { computeFlatRecordPageFieldsViewToCreate } from 'src/engine/metadata-modules/object-metadata/utils/compute-flat-record-page-fields-view-to-create.util';
 import { computeFlatViewFieldsToCreate } from 'src/engine/metadata-modules/object-metadata/utils/compute-flat-view-fields-to-create.util';
+import { WidgetConfigurationType } from 'src/engine/metadata-modules/page-layout-widget/enums/widget-configuration-type.type';
 import { PageLayoutType } from 'src/engine/metadata-modules/page-layout/enums/page-layout-type.enum';
 import { WorkspaceCacheService } from 'src/engine/workspace-cache/services/workspace-cache.service';
 import { computeTwentyStandardApplicationAllFlatEntityMaps } from 'src/engine/workspace-manager/twenty-standard-application/utils/twenty-standard-application-all-flat-entity-maps.constant';
@@ -245,9 +246,10 @@ export class BackfillRecordPageLayoutsCommand extends ActiveOrSuspendedWorkspace
         twentyStandardApplicationId: twentyStandardFlatApplication.id,
       });
 
-    const { flatObjectMetadataMaps } =
+    const { flatObjectMetadataMaps, flatFieldMetadataMaps } =
       await this.workspaceCacheService.getOrRecompute(workspaceId, [
         'flatObjectMetadataMaps',
+        'flatFieldMetadataMaps',
       ]);
 
     const existingObjectMetadataUniversalIdentifiers = new Set(
@@ -311,9 +313,37 @@ export class BackfillRecordPageLayoutsCommand extends ActiveOrSuspendedWorkspace
       standardMaps.flatPageLayoutWidgetMaps.byUniversalIdentifier,
     )
       .filter(isDefined)
-      .filter((widget) =>
-        tabUniversalIdentifiers.has(widget.pageLayoutTabUniversalIdentifier),
-      );
+      .filter((widget) => {
+        if (
+          !tabUniversalIdentifiers.has(widget.pageLayoutTabUniversalIdentifier)
+        ) {
+          return false;
+        }
+
+        if (
+          widget.universalConfiguration.configurationType ===
+          WidgetConfigurationType.FIELD
+        ) {
+          const fieldMetadataUniversalIdentifier =
+            widget.universalConfiguration.fieldMetadataId;
+
+          if (
+            !isDefined(
+              flatFieldMetadataMaps.byUniversalIdentifier[
+                fieldMetadataUniversalIdentifier
+              ],
+            )
+          ) {
+            this.logger.log(
+              `Skipping standard widget ${widget.universalIdentifier} for workspace ${workspaceId}: field metadata ${fieldMetadataUniversalIdentifier} not found`,
+            );
+
+            return false;
+          }
+        }
+
+        return true;
+      });
 
     const fieldsWidgetViewUniversalIdentifiers = new Set<string>();
 
@@ -338,11 +368,6 @@ export class BackfillRecordPageLayoutsCommand extends ActiveOrSuspendedWorkspace
         return true;
       });
 
-    const { flatFieldMetadataMaps } =
-      await this.workspaceCacheService.getOrRecompute(workspaceId, [
-        'flatFieldMetadataMaps',
-      ]);
-
     const viewFields = Object.values(
       standardMaps.flatViewFieldMaps.byUniversalIdentifier,
     )