chore(orchestration): remote joiner query planner (#13364)

What:
 - Added query planning to the Remote Joiner, enabling phased and parallel execution of data aggregation.
- Replaced object deletes with non-enumerable property hiding to improve performance.

packages/core/modules-sdk/src/remote-query/remote-query.ts

@@ -296,6 +296,24 @@ export class RemoteQuery {
       }
     }
 
+    return this.executeFetchRequest({
+      expand,
+      keyField,
+      ids,
+      relationship,
+    })
+  }
+
+  private async executeFetchRequest(params: {
+    expand: RemoteExpandProperty
+    keyField: string
+    ids?: (unknown | unknown[])[]
+    relationship?: JoinerRelationship
+  }): Promise<{
+    data: unknown[] | { [path: string]: unknown }
+    path?: string
+  }> {
+    const { expand, keyField, ids, relationship } = params
     const serviceConfig = expand.serviceConfig
     const service = this.modulesMap.get(serviceConfig.serviceName)!