Commit 7dc1bf2 renamed scripts/build-wxuniversal-wasm.sh to
build-wx-wasm.sh but missed the CI workflow, so the "Build wxWidgets
(wxUniversal WASM)" step ran a script that no longer exists. Update the
run command in ci-ubicloud.yml plus the two stale comments referencing
the old name (ci-ubicloud.yml:43, scripts/common/stages.sh:7).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>