chore: use creation time instead of approved time. (halo-dev#32)

#### What type of PR is this?

/kind improvement

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

使用创建时间代替审核时间

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

Fixes halo-dev/halo#3915

#### Special notes for your reviewer:

1. 安装可测试插件 [plugin-comment-widget-1.5.0-SNAPSHOT.jar.zip](https://github.com/halo-sigs/plugin-comment-widget/files/11450596/plugin-comment-widget-1.5.0-SNAPSHOT.jar.zip)
2. console 端开启评论审核
3. 发起一个评论并等待一段时间前往 console 端进行审核
4. 查看界面评论时间是否为创建时间而非审核通过时间

#### Does this PR introduce a user-facing change?
```release-note
使用创建时间替代审核时间
```

Author: LIlGG

packages/comment-widget/src/components/CommentItem.vue

@@ -41,7 +41,7 @@ const hoveredReply = ref<ReplyVo>();
 provide<Ref<ReplyVo | undefined>>("hoveredReply", hoveredReply);
 
 const timeAgo = useTimeAgo(
-  new Date(props.comment?.spec.approvedTime || new Date())
+  new Date(props.comment?.spec.creationTime || new Date())
 );
 
 const isAuthor = computed(() => {

packages/comment-widget/src/components/ReplyItem.vue

@@ -22,7 +22,7 @@ const emit = defineEmits<{
 const showForm = ref(false);
 
 const timeAgo = useTimeAgo(
-  new Date(props.reply.spec.approvedTime || new Date())
+  new Date(props.reply.spec.creationTime || new Date())
 );
 
 const website = computed(() => {