feature(Revision history): Switch from dropdown to normal button and show history

[HeikoMamerow]

This avoids an unnecessary step to display the revision history.

For details see my ticket:
#55486

[github-actions]

👋 Thanks for your first Pull Request and for helping build the future of Gutenberg and WordPress, @HeikoMamerow! In case you missed it, we'd love to have you join us in our Slack community, where we hold regularly weekly meetings open to anyone to coordinate with each other.

If you want to learn more about WordPress development in general, check out the Core Handbook full of helpful information.

[github-actions]

Warning: Type of PR label error

To merge this PR, it requires exactly 1 label indicating the type of PR. Other labels are optional and not being checked here.

• Type-related labels to choose from: [Type] Automated Testing, [Type] Breaking Change, [Type] Bug, [Type] Build Tooling, [Type] Code Quality, [Type] Copy, [Type] Developer Documentation, [Type] Enhancement, [Type] Experimental, [Type] Feature, [Type] New API, [Type] Task, [Type] Performance, [Type] Project Management, [Type] Regression, [Type] Security, [Type] WP Core Ticket, Backport from WordPress Core.
• Labels found: First-time Contributor.

Read more about Type labels in Gutenberg.

[Mamaduka]

@HeikoMamerow, can we close this PR now that your original report has been resolved - #55486 (comment)?

[HeikoMamerow]

Yes you can. 👍😊

[Mamaduka]

Thanks for contributing, @HeikoMamerow!