Add asset deletion progress indicator (#7906)

## Summary

Currently the delay between user action and visual response is too long
and it looks like it hasn't worked.
This adds a visual indicator that the action is processing.

## Changes

- add loading indicator while asset is deleting

## Screenshots (if applicable)
(Artifically delayed deletion)


https://github.com/user-attachments/assets/a9a8b9fe-896d-4666-b643-ec8b990f6444

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7906-Add-asset-deletion-progress-indicator-2e26d73d365081ed82b8e770ba3d0615)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Alexander Brown <drjkl@comfy.org>
Co-authored-by: Jin Yi <jin12cc@gmail.com>

src/renderer/extensions/linearMode/LinearPreview.vue

@@ -144,7 +144,7 @@ async function rerun(e: Event) {
             {
               icon: 'icon-[lucide--trash-2]',
               label: t('queue.jobMenu.deleteAsset'),
-              action: () => mediaActions.confirmDelete(selectedItem!)
+              action: () => mediaActions.deleteAssets(selectedItem!)
             }
           ]
         ]"