Fix/77039 UI breadcrumb

[pranvinit]

What?

1. Add UI breadcrumbs to the WordPress UI.

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[ciampo]

Thank you for the initiative, @pranvinit — although I'm going to close this PR.

The status and conversation in #77039 are quite clear about it still needing design feedback and having a few hard dependencies (such a Menu component).

The components group will likely take care of this task, when all dependencies are fulfilled.