Restore AppImage bundle for Linux (revert deb workaround)

The linuxdeploy failure was caused by CUDA shared library references in
onnxruntime-node, not by linuxdeploy itself. The CUDA stripping step
added in the previous commit fixes the root cause, so AppImage bundling
should work now.

.github/workflows/desktop-release.yml

@@ -346,7 +346,7 @@ jobs:
           releaseBody: See the assets to download and install this version.
           releaseDraft: ${{ env.RELEASE_DRAFT }}
           prerelease: false
-          args: --bundles deb
+          args: --bundles appimage
 
       - name: Build Linux app (smoke only)
         if: env.IS_SMOKE_TAG == 'true'