feat: Allow sync with remote plugin status. (#14176)

Add forceRemoteSync to plugin/list.
When it is set to True, we will sync the local plugin status with the
remote one (backend-api/plugins/list).

codex-rs/app-server-protocol/schema/json/ClientRequest.json

@@ -1131,6 +1131,10 @@
             "array",
             "null"
           ]
+        },
+        "forceRemoteSync": {
+          "description": "When true, reconcile the official curated marketplace against the remote plugin state before listing marketplaces.",
+          "type": "boolean"
         }
       },
       "type": "object"