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/SiteUserDataDialog.vue

@@ -285,7 +285,7 @@ onBeforeMount(async () => {
           >{{ `数据 - ${props.site?.name}` }}
           <IconBtn @click.stop="refreshSiteData" color="info"><VIcon icon="mdi-refresh" /></IconBtn>
         </VCardTitle>
-        <DialogCloseBtn @click="emit('close')" />
+        <VDialogCloseBtn @click="emit('close')" />
       </VCardItem>
       <VDivider />
       <VCardText class="pt-5">