Fix queryRunnerArgsFactory for updateMany resolver (#10322)

This was updated a few weeks ago and went unnoticed since 1) integration
tests were broken + 2) we don't have actionnable updateMany mutations in
the product at the moment

It will fix some tests, at least
all-people-resolvers.integration-spec.ts for instance

packages/twenty-server/src/engine/api/graphql/workspace-query-runner/factories/query-runner-args.factory.ts

@@ -105,19 +105,15 @@ export class QueryRunnerArgsFactory {
             (args as UpdateManyResolverArgs).filter,
             fieldMetadataMapByNameByName,
           ),
-          data: await Promise.all(
+          data: await this.overrideDataByFieldMetadata(
-            (args as UpdateManyResolverArgs).data?.map((arg, index) =>
+            (args as UpdateManyResolverArgs).data,
-              this.overrideDataByFieldMetadata(
-                arg,
             options,
             fieldMetadataMapByNameByName,
             {
-                  argIndex: index,
+              argIndex: 0,
               shouldBackfillPosition: false,
             },
           ),
-            ) ?? [],
-          ),
         } satisfies UpdateManyResolverArgs;
       case ResolverArgsType.FindOne:
         return {