feat: update post in progress status when post changed (#2350)

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#### What type of PR is this?
/kind improvement
/area core
/milestone 2.0
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#### What this PR does / why we need it:
文章更新时 reconcile 文章内容是否有草稿正在编辑，有则更新status.inProgress=true否则为false
#### Which issue(s) this PR fixes:

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a part of #2322

#### Special notes for your reviewer:
/cc @halo-dev/sig-halo 
#### Does this PR introduce a user-facing change?

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```release-note
None
```

src/main/java/run/halo/app/core/extension/reconciler/PostReconciler.java

@@ -88,6 +88,7 @@ public class PostReconciler implements Reconciler<Request> {
         }
 
         // handle contributors
+        String headSnapshot = post.getSpec().getHeadSnapshot();
         contentService.listSnapshots(Snapshot.SubjectRef.of(Post.KIND, name))
             .collectList()
             .subscribe(snapshots -> {
@@ -102,6 +103,14 @@ public class PostReconciler implements Reconciler<Request> {
                     .sorted()
                     .toList();
                 status.setContributors(contributors);
+
+                // update in progress status
+                snapshots.stream()
+                    .filter(snapshot -> snapshot.getMetadata().getName().equals(headSnapshot))
+                    .findAny()
+                    .ifPresent(snapshot -> {
+                        status.setInProgress(!isPublished(snapshot));
+                    });
             });
 
         // handle cancel publish,has released version and published is false and not handled
@@ -149,4 +158,8 @@ public class PostReconciler implements Reconciler<Request> {
         // TODO The default capture 150 words as excerpt
         return StringUtils.substring(text, 0, 150);
     }
+
+    private boolean isPublished(Snapshot snapshot) {
+        return snapshot.getSpec().getPublishTime() != null;
+    }
 }