Fixes cut off popovers, a history restore bug, and reference search unexpectedly closing

This release fixes several usability issues including reference search closing unexpectedly, popovers being cut off in dialogs, document restoration for published-only documents, and annotation popover positioning in text editing.

• Fixes an issue where the reference input search could unexpectedly close when used inside an array of references
• Fixes an issue where popovers, such as reference search results, could be cut off by the top of the document when opened from a Portable Text link or an array item dialog. They now stay fully visible inside the document pane.
• Fixes a bug preventing restoration of documents that only ever existed in a published form, like those without a draft or other version. The "Restore most recent revision" action is now available for these documents. Switch to the "published" perspective to access it.
• Fixes an issue where the annotation popover in the Portable Text Input appeared over selected text, colliding with the floating comment button. The popover now only shows when the selection is collapsed.