Migrate pagelayout position frontend (#18229)

## Context
Part 1 of migrating gridPosition in favor of typed position
FE should now always send both values to the BE and use both.

Next steps: 
- Update the backend to enforce and validate the new position field + DB
migrations gridPositon -> position (type: GRID)
- Cleanup frontend usage
- Cleanup backend

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

@@ -329,7 +329,7 @@ export const fromPageLayoutWidgetConfigurationToUniversalConfiguration = ({
     }
 
     case WidgetConfigurationType.FRONT_COMPONENT: {
-      const { frontComponentId, ...rest } = configuration;
+      const { frontComponentId, configurationType } = configuration;
 
       const frontComponentUniversalIdentifier: string | null =
         frontComponentUniversalIdentifierById[frontComponentId] ?? null;
@@ -345,7 +345,7 @@ export const fromPageLayoutWidgetConfigurationToUniversalConfiguration = ({
       }
 
       return {
-        ...rest,
+        configurationType,
         frontComponentUniversalIdentifier,
       };
     }