Floorp v12.16.4

Release Note: https://blog.floorp.app/release/12.16.4

This draft was assembled from an immutable, natively verified release manifest set.

What's Changed

• fix(panel-sidebar): restore web and extension panel loading on Gecko 153 by @Ryosuke-Asano in https://github.com/Floorp-Projects/Floorp/pull/2587
• fix(workspaces): keep URL bar navigation in container tabs by @Ryosuke-Asano in https://github.com/Floorp-Projects/Floorp/pull/2591
• fix(release): bind stable updates to immutable provenance by @Ryosuke-Asano in https://github.com/Floorp-Projects/Floorp/pull/2589

Full Changelog: https://github.com/Floorp-Projects/Floorp/compare/v12.16.3...v12.16.4