These used to work because there was a huge blocking load operation, which is now more asynchronous. Note that the change made in `SongSelect` is not required, but defensive (feels it should have been doing this the whole time).
ButtonSystem
See https://github.com/ppy/osu/pull/25418/checks?check_run_id=18886372597.
+ moved time_regex into EditorTimestampParser
- Invoke Action on error to Notify user - added some comments