Add nofollow to Link UI in Nav and Buttons blocks

[getdave]

Following on from #53945 we should add Nofollow control to other instances of the Link UI. Specifically:

• Navigation
• Buttons

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If and when this merges we should follow up to add this control elsewhere:

• Navigation links
• Buttons block

Originally posted by @getdave in #53945 (comment)

[bangank36]

@getdave can I contribute to the Button block link editor with nofollow control? Thanks

[getdave]

@getdave can I contribute to the Button block link editor with nofollow control? Thanks

Absolutely! That would be great. You would need to wire everything up to save the nofollow into the block attributes. I look forward to your PR. Please ping me.

[bangank36]

@getdave with the Button Link has been merged #54110, do you think Navigation Links should be next, or do you have other plan for it? Thanks

[getdave]

Is there a strong use case for nofollow on Navigation links? How often would one wish to add a link to a Navigation that points to another site? I guess if it were a Navigation other than one in a header of the website perhaps that might happen?

[bangank36]

I think user may want to add nofollow to External link Item on the Navgation? Actually there are a handful of articles that help users to add nofollow to their Navigation items, eg: /how-to-add-nofollow-links-in-wordpress-navigation-menus/, I guess users will expect the same with the Navigation block

[skorasaurus]

can close #13542 when this is also closed