fix: allow app-manifest RECORD_TABLE widgets to reference a view by universal identifier (#23634)

## Context

Fixes #23065.

App-manifest dashboard `RECORD_TABLE` widgets could not reference a view
by universal identifier. `RecordTableConfiguration.viewId` was typed as
a plain `string`, so `FormatRecordSerializedRelationProperties` (which
only renames properties branded with `SerializedRelation`) left it as
`viewId` in the manifest type. As a result the manifest rejected
`viewUniversalIdentifier`, and the widget could not be made portable
across workspaces the way `FIELDS` widgets already are.

## Changes

- `RecordTableConfiguration.viewId` is now `SerializedRelation | null`
(was `string`), matching `FieldsConfiguration`. This makes the manifest
type surface `viewUniversalIdentifier` instead of `viewId`.
- `RecordTableConfigurationDTO.viewId` retyped to match.
- Forward converter
(`fromPageLayoutWidgetConfigurationToUniversalConfiguration`): the
`RECORD_TABLE` case now emits the `viewUniversalIdentifier` key instead
of `viewId`, since the branded property is renamed in the universal
type. Now consistent with the `FIELDS` case (uses `| null`).
- Reverse converter
(`fromUniversalConfigurationToFlatPageLayoutWidgetConfiguration`): the
`RECORD_TABLE` case now reads `viewUniversalIdentifier` and resolves it
back to a concrete `viewId`.

Frontend readers need no change: `SerializedRelation` is a runtime
string, so the existing `typeof === 'string'` guards and `as string`
casts still hold.

## Migration

None needed. The persisted `pageLayoutWidget.configuration` still stores
a concrete `viewId`; `universalConfiguration` (which carries
`viewUniversalIdentifier`) is computed on the fly from it and never
persisted. Only the manifest/universal representation changes, so there
is no stored data in the old shape to backfill.

## Verification

- `nx typecheck twenty-server` and `nx typecheck twenty-front`: pass
- oxlint + oxfmt on the changed files: clean
- End-to-end against a server built from this branch: built a minimal
app declaring a view (by `universalIdentifier`) and a `DASHBOARD` page
layout with a `RECORD_TABLE` widget referencing that view via
`viewUniversalIdentifier`, then installed it. The manifest carried
`viewUniversalIdentifier`, and the installed
`pageLayoutWidget.configuration.viewId` resolved to the concrete
workspace view id.

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packages/twenty-server/src/engine/metadata-modules/flat-page-layout-widget/utils/from-page-layout-widget-configuration-to-universal-configuration.util.ts

@@ -281,11 +281,10 @@ export const fromPageLayoutWidgetConfigurationToUniversalConfiguration = ({
     case WidgetConfigurationType.RECORD_TABLE: {
       const { viewId, ...rest } = configuration;
 
-      let viewUniversalIdentifier: string | undefined = undefined;
+      let viewUniversalIdentifier: string | null = null;
 
       if (isDefined(viewId)) {
-        viewUniversalIdentifier =
-          viewUniversalIdentifierById[viewId] ?? undefined;
+        viewUniversalIdentifier = viewUniversalIdentifierById[viewId] ?? null;
 
         if (
           !isDefined(viewUniversalIdentifier) &&
@@ -300,7 +299,7 @@ export const fromPageLayoutWidgetConfigurationToUniversalConfiguration = ({
 
       return {
         ...rest,
-        viewId: viewUniversalIdentifier,
+        viewUniversalIdentifier,
       };
     }
 

packages/twenty-server/src/engine/metadata-modules/page-layout-widget/dtos/record-table-configuration.dto.ts

@@ -8,7 +8,10 @@ import {
   IsUUID,
   Min,
 } from 'class-validator';
-import { type RecordTableConfiguration } from 'twenty-shared/types';
+import {
+  type RecordTableConfiguration,
+  type SerializedRelation,
+} from 'twenty-shared/types';
 
 import { WidgetConfigurationType } from 'src/engine/metadata-modules/page-layout-widget/enums/widget-configuration-type.type';
 
@@ -22,7 +25,7 @@ export class RecordTableConfigurationDTO implements RecordTableConfiguration {
   @Field(() => String, { nullable: true })
   @IsOptional()
   @IsUUID()
-  viewId?: string;
+  viewId?: SerializedRelation | null;
 
   @Field(() => Int, { nullable: true })
   @IsOptional()

packages/twenty-server/src/engine/workspace-manager/workspace-migration/workspace-migration-runner/action-handlers/page-layout-widget/services/utils/from-universal-configuration-to-flat-page-layout-widget-configuration.util.ts

@@ -260,10 +260,9 @@ export const fromUniversalConfigurationToFlatPageLayoutWidgetConfiguration = ({
     }
 
     case WidgetConfigurationType.RECORD_TABLE: {
-      const { viewId: viewUniversalIdentifier, ...rest } =
-        universalConfiguration;
+      const { viewUniversalIdentifier, ...rest } = universalConfiguration;
 
-      let viewId: string | undefined = undefined;
+      let viewId: string | null = null;
 
       if (isDefined(viewUniversalIdentifier)) {
         const flatView = findFlatEntityByUniversalIdentifier({