Fixes forgejo/forgejo#12090 Fixes forgejo/forgejo#12228 Fixes forgejo/forgejo#12743 Partially revert https://codeberg.org/forgejo/forgejo/src/commit/b5988efc85ca54e39459323775aef0bc20f145be/web_src/css/actions.css#L91-L94 from forgejo/forgejo!10563. This will cause overly long lists to overflow the viewport [like in this image](https://codeberg.org/forgejo/forgejo/attachments/b335c5b8-ad1a-44fc-bbd2-99c975c2a5e5), but will make the branch selector and select inputs usable again. In essence, replacing a serious bug with a less serious one. Note: max-height limit wasn't effective since it was clipping inline (x) axis instead of block (y) axis. So the menu was still higher than 500 px. Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12753 Reviewed-by: Andreas Ahlenstorf <aahlenst@noreply.codeberg.org>