PR Description
This PR fixes the behavior the staging secondary panel (staged lines) currently has in relation to changing its view mode. In particular, these changes allows the users to expand the secondary panels the same way all the others do.
This closes #3629.
Please check if the PR fulfills these requirements
[x] Cheatsheets are up-to-date (run go generate ./...)
This closes #3629.
Please check if the PR fulfills these requirements
[x] Cheatsheets are up-to-date (run
go generate ./...
)[x] Code has been formatted (see here)
[x] Tests have been added/updated (see here for the integration test guide)
[ ] Text is internationalised (see here)
[ ] Docs have been updated if necessary
[x] You've read through your own file changes for silly mistakes etc