Pattern Editing Iteration for WordPress 7.1

[talldan]

Follows on from #73775

Enhancements

• Allow users to designate content areas within patterns (#71887)
• Surface style variations for inner blocks of a pattern (#75658)
• Fade out other blocks in List view when editing a pattern (#73954)

Needs design

• Improve 'Edit pattern' discoverability (#73271)
• Add breadcrumbs in topbar when navigating entities, possibly related to a editor topbar redesign (#73953)

Needs discussion / Exploration

• Grouping and labelling sections within patterns OR some kind of repeater system (#75463)
• Retain styles when adding paragraphs (#75601)

[rashyy17]

Hi, can I please get approval to work on this issue?