feat: Improve MediaAssetCard video controls and add gallery view (#6065)

## Summary
- Enhanced video control visibility logic for better UX
- Added fullscreen gallery view with zoom-in button  
- Fixed hover interaction issues with overlays

## Changes

### Video Controls
- **Before**: Controls hidden when not hovering
- **After**: Controls always visible when not playing, hover-based
during playback

### Overlay Behavior  
- **Before**: All overlays hidden during video playback
- **After**: All overlays (actions, tags, layers) show on hover even
during playback

### Gallery View
- Added zoom-in button to top-right corner (all media types except 3D)
- Integrated with existing ResultGallery component
- Gallery closes when clicking dimmed background area

### Bug Fixes
- Fixed hover flicker issue by proper event handling on overlay elements

## Test Plan
- [x] Test video controls visibility (paused vs playing)
- [x] Test overlay hover behavior during video playback
- [x] Test zoom-in button opens gallery view
- [x] Test gallery closes on background click
- [x] Test 3D assets don't show zoom button
- [x] Test in Storybook with various media types

🤖 Generated with [Claude Code](https://claude.ai/code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6065-feat-Improve-MediaAssetCard-video-controls-and-add-gallery-view-28d6d73d3650818c90cfc5d0d00e4826)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/platform/assets/components/MediaAssetMoreMenu.vue

@@ -1,6 +1,7 @@
 <template>
   <div class="flex flex-col">
     <IconTextButton
+      v-if="asset?.kind !== '3D'"
       type="transparent"
       class="dark-theme:text-white"
       label="Inspect asset"
@@ -93,6 +94,7 @@ import { computed, inject } from 'vue'
 import IconTextButton from '@/components/button/IconTextButton.vue'
 
 import { useMediaAssetActions } from '../composables/useMediaAssetActions'
+import { useMediaAssetGalleryStore } from '../composables/useMediaAssetGalleryStore'
 import { MediaAssetKey } from '../schemas/mediaAssetSchema'
 import MediaAssetButtonDivider from './MediaAssetButtonDivider.vue'
 
@@ -102,14 +104,13 @@ const { close } = defineProps<{
 
 const { asset, context } = inject(MediaAssetKey)!
 const actions = useMediaAssetActions()
+const galleryStore = useMediaAssetGalleryStore()
 
-const showWorkflowOptions = computed(() => {
-  return context.value.type
-})
+const showWorkflowOptions = computed(() => context.value.type)
 
 const handleInspect = () => {
   if (asset.value) {
-    actions.viewAsset(asset.value.id)
+    galleryStore.openSingle(asset.value)
   }
   close()
 }