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/v2/PluginListResponse.json

@@ -196,6 +196,12 @@
         "$ref": "#/definitions/PluginMarketplaceEntry"
       },
       "type": "array"
+    },
+    "remoteSyncError": {
+      "type": [
+        "string",
+        "null"
+      ]
     }
   },
   "required": [