Refactor page titles and dialog close buttons across multiple views

- Replaced instances of `DialogCloseBtn` with `VDialogCloseBtn` in TransferHistoryView, AccountSettingAbout, AccountSettingSystem, and UserProfileView for consistency.
- Introduced a new component `PageContentTitle` to standardize page titles in SiteCardListView, SubscribeListView, UserListView, and WorkflowListView, improving layout and readability.
- Added keyword filtering functionality in SubscribeListView and SubscribeShareView to enhance user experience during searches.
- Added a new site logo image to the assets.

src/components/dialog/WorkflowAddEditDialog.vue

@@ -81,7 +81,7 @@ async function editWorkflow() {
 <template>
   <VDialog scrollable :close-on-back="false" eager max-width="30rem" :fullscreen="!display.mdAndUp.value">
     <VCard :title="`${title}任务`" class="rounded-t">
-      <DialogCloseBtn @click="emit('close')" />
+      <VDialogCloseBtn @click="emit('close')" />
       <VDivider />
       <VCardText>
         <VForm @submit.prevent="() => {}">