Collapse all for paragraphs with required fields

Yeah party... ;-)

That's strange. The idea was that a failing validation basically consistencly force expands the Paragraph widget / child. So instead of just displaying the widget / child expanded even if it has "collapsed" state, the validation should set that state back to edit.

It seems that's a bug in validation result affects state consistency.

Aaaaand sorry to mention, but tests will be a requirement for these problems. :-)

Connecting issues..

The reason it behaves like this is because of the auto-uncollapse feature that we currently have that automatically uncollapses paragraphs with validation errors.

The all button doesn't update because we used to build that first. Now we build it last which fixes other problems and also this, now the button knows that they are still uncollapsed.

But we identified the closed-paragraph-validation-feature as a huge performance problem in #2935134: [meta] Improve performance of paragraphs widget and are basically removing it there. Instead, we fixed validation of the collapse button so you instead now get a validation message that tells you *why* you're not allowed to collapse :)

Closing as duplicate.