Strip architecture suffix from Windows app exe

.github/workflows/desktop-e2e.yml

@@ -206,7 +206,14 @@ jobs:
           vs-version: 16
       - name: Build app
         shell: bash
-        run: ./build.sh
+        run: |
+          ./build.sh
+          # Strip architecture-specific suffix
+          pushd dist
+          original_file=$(find *.exe)
+          new_file=$(echo $original_file | perl -pe "s/^(MullvadVPN-.*?)(_x64|_arm64)?(\.exe)$/\1\3/p")
+          mv "$original_file" "$new_file"
+          popd
       - name: Build test executable
         shell: bash
         run: ./desktop/packages/mullvad-vpn/scripts/build-test-executable.sh