fix: open previewable assets from list preview click/double-click (#9077)

## Summary
- emit `preview-click` from `AssetsListItem` when clicking the preview
tile
- wire assets sidebar rows and queue job-history rows so preview-tile
click and row double-click open the viewer/gallery
- gate job-history preview opening by `taskRef.previewOutput` (not
`iconImageUrl`) and use preview output URL/type so video previews are
supported
- add/extend tests for preview click and double-click behavior in assets
list and job history

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9077-fix-open-previewable-assets-from-list-preview-click-double-click-30f6d73d3650810a873cfa2dc085bf97)
by [Unito](https://www.unito.io)

src/components/sidebar/tabs/AssetsSidebarListView.vue

@@ -56,6 +56,8 @@
             @mouseleave="onAssetLeave(item.asset.id)"
             @contextmenu.prevent.stop="emit('context-menu', $event, item.asset)"
             @click.stop="emit('select-asset', item.asset, selectableAssets)"
+            @dblclick.stop="emit('preview-asset', item.asset)"
+            @preview-click="emit('preview-asset', item.asset)"
             @stack-toggle="void toggleStack(item.asset)"
           >
             <template v-if="hoveredAssetId === item.asset.id" #actions>
@@ -116,6 +118,7 @@ const assetsStore = useAssetsStore()
 
 const emit = defineEmits<{
   (e: 'select-asset', asset: AssetItem, assets?: AssetItem[]): void
+  (e: 'preview-asset', asset: AssetItem): void
   (e: 'context-menu', event: MouseEvent, asset: AssetItem): void
   (e: 'approach-end'): void
 }>()