fix(UploadModel): truncate long filenames in wizard (#7939)

## Summary

Truncate long filenames in the model upload wizard to prevent dialog
overflow.

## Changes

- **UploadModelConfirmation**: Added `min-w-0 flex-1 truncate` to model
filename display
- **UploadModelProgress**: Added truncation to both processing and
success state filename displays

## Testing

1. Import a model with a very long filename
2. Verify the filename truncates with ellipsis instead of expanding the
dialog

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7939-fix-UploadModel-truncate-long-filenames-in-wizard-2e46d73d365081a0a60bd6326129b9a4)
by [Unito](https://www.unito.io)

src/platform/assets/components/UploadModelConfirmation.vue

@@ -5,15 +5,15 @@
         {{ $t('assetBrowser.modelAssociatedWithLink') }}
       </p>
       <div
-        class="flex items-center gap-3 bg-secondary-background p-3 rounded-lg"
+        class="flex items-center gap-3 rounded-lg bg-secondary-background p-3"
       >
         <img
           v-if="previewImage"
           :src="previewImage"
           :alt="metadata?.filename || metadata?.name || 'Model preview'"
-          class="w-14 h-14 rounded object-cover flex-shrink-0"
+          class="size-14 flex-shrink-0 rounded object-cover"
         />
-        <p class="m-0 text-base-foreground">
+        <p class="m-0 min-w-0 flex-1 truncate text-base-foreground">
           {{ metadata?.filename || metadata?.name }}
         </p>
       </div>