Append ellipses (...) to menu actions that require subsequent steps to complete

[jameskoster]

Related to #64340. Extracted from #53696.

A growing trend in modern user interfaces is the use of ellipses appended to menu items to indicate when additional steps are required to complete an action:

Is this a convention to consider adopting across the WP components package, and if so how might it be accomplished?

[jasmussen]

#53696 fixes this! Give it a review. I left my own thoughts, but they're not strong and not blocking, happy to defer.

[jameskoster]

Hah, this issue was opened as a result of the discussion in that PR :D

[jasmussen]

Happy to move forward :)