feat(cxl-lumo-styles): add button pending state

[anoblet]

https://app.clickup.com/t/86azbhexr

[github-actions[bot]]

size-limit report 📦

Path	Size
packages/cxl-ui/pkg/dist-web/cxl-ui.js	72.13 KB (+0.17% 🔺)
packages/cxl-ui/pkg/dist-web/cxl-ui-jwplayer.js	11.89 KB (0%)
packages/cxl-ui/pkg/dist-web/cxl-ui-playbooks.js	29.04 KB (+0.43% 🔺)
packages/cxl-ui/pkg/dist-web/vendor.js	140.5 KB (0%)
packages/cxl-ui/pkg/dist-web/cxl-ui-jwplayer.js, packages/cxl-ui/pkg/dist-web/cxl-ui-playbooks.js, packages/cxl-ui/pkg/dist-web/cxl-ui.js, packages/cxl-ui/pkg/dist-web/manifest.js, packages/cxl-ui/pkg/dist-web/unresolved.js, packages/cxl-ui/pkg/dist-web/vendor.js	254.71 KB (+0.1% 🔺)

[anoblet]

@pawelkmpt I had an issue at first that was fixed by reloading the page. This is what I see in Incognito now: