fix #1171 && Improve message recall handling and cleanup

Changed recallMsg to return the result of the event call. Added a 5-second cache cleanup for recall events in DeleteMsg. Removed an unnecessary blank line in plugin.ts.

src/core/apis/msg.ts

@@ -191,7 +191,7 @@ export class NTQQMsgApi {
     }
 
     async recallMsg(peer: Peer, msgId: string) {
-        await this.core.eventWrapper.callNormalEventV2(
+        return await this.core.eventWrapper.callNormalEventV2(
             'NodeIKernelMsgService/recallMsg',
             'NodeIKernelMsgListener/onMsgInfoListUpdate',
             [peer, [msgId]],