fix: disable inspect for non-previewable assets (#8989)

## Summary
Prevent text/other assets from opening a blank fullscreen viewer by
restricting inspect/zoom to previewable media kinds.

## Changes
- Add `isPreviewableMediaType` helper in shared `formatUtil`.
- Gate inspect/zoom actions in `AssetsSidebarTab`, `MediaAssetCard`, and
`MediaAssetContextMenu` using an allowlist (`image`, `video`, `audio`,
`3D`).
- Build gallery items from previewable assets only.
- Add unit tests for `isPreviewableMediaType`.

## Why
`ResultGallery` only renders image/video/audio; text/other assets could
previously enter fullscreen with no renderable content.

## Review Focus
- Verify text/other assets no longer show Inspect and do not open
fullscreen.
- Verify image/video/audio behavior is unchanged.
- Verify 3D still opens the 3D viewer dialog.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8989-fix-disable-inspect-for-non-previewable-assets-30c6d73d36508103a9b9da4fe50236ea)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Johnpaul Chiwetelu <49923152+Myestery@users.noreply.github.com>
Co-authored-by: GitHub Action <action@github.com>

src/platform/assets/components/MediaAssetCard.vue

@@ -59,6 +59,7 @@
       >
         <IconGroup background-class="bg-white">
           <Button
+            v-if="canInspect"
             variant="overlay-white"
             size="icon"
             :aria-label="$t('mediaAsset.actions.zoom')"
@@ -141,7 +142,8 @@ import {
   formatDuration,
   formatSize,
   getFilenameDetails,
-  getMediaTypeFromFilename
+  getMediaTypeFromFilename,
+  isPreviewableMediaType
 } from '@/utils/formatUtil'
 import { cn } from '@/utils/tailwindUtil'
 
@@ -217,6 +219,8 @@ const previewKind = computed((): PreviewKind => {
   return getMediaTypeFromFilename(asset?.name || '')
 })
 
+const canInspect = computed(() => isPreviewableMediaType(fileKind.value))
+
 // Get filename without extension
 const fileName = computed(() => {
   return getFilenameDetails(asset?.name || '').filename
@@ -278,7 +282,7 @@ const showActionsOverlay = computed(() => {
 })
 
 const handleZoomClick = () => {
-  if (asset) {
+  if (asset && canInspect.value) {
     emit('zoom', asset)
   }
 }

src/platform/assets/components/MediaAssetContextMenu.vue

@@ -39,6 +39,7 @@ import { useI18n } from 'vue-i18n'
 import Button from '@/components/ui/button/Button.vue'
 import { isCloud } from '@/platform/distribution/types'
 import { supportsWorkflowMetadata } from '@/platform/workflow/utils/workflowExtractionUtil'
+import { isPreviewableMediaType } from '@/utils/formatUtil'
 import { detectNodeTypeFromFilename } from '@/utils/loaderNodeUtil'
 import { cn } from '@/utils/tailwindUtil'
 
@@ -206,8 +207,8 @@ const contextMenuItems = computed<MenuItem[]>(() => {
 
   // Individual mode: Show all menu options
 
-  // Inspect (if not 3D)
-  if (fileKind !== '3D') {
+  // Inspect
+  if (isPreviewableMediaType(fileKind)) {
     items.push({
       label: t('mediaAsset.actions.inspect'),
       icon: 'icon-[lucide--zoom-in]',