* Only show "Edit sketch" button when code pane is focused with sketch selected
Closes#4273. WIP until tests are updated, since this will impact many
that look for the "Edit sketch" button.
* Start removing "edit sketch" point-and-click from E2E
* Update more E2E tests
* Update more tests that assumed Edit Sketch button
* A snapshot a day keeps the bugs away! 📷🐛
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