Fix the problem of getting stuck on VM exit (#2919)

#### What type of PR is this?

/kind bug
/area core

#### What this PR does / why we need it:

Shutdown AsyncLogWriter on VM exit.

#### Which issue(s) this PR fixes:

Fixes https://github.com/halo-dev/halo/issues/2901

#### Does this PR introduce a user-facing change?

```release-note
None
```

src/main/java/run/halo/app/metrics/VisitLogWriter.java

@@ -96,7 +96,7 @@ public class VisitLogWriter implements InitializingBean, DisposableBean {
         this.started = false;
         interruptThread = true;
         asyncLogWriter.dispose();
-        executorService.shutdown();
+        executorService.shutdownNow();
     }
 
     static class AsyncLogWriter implements Disposable {