Fix a regression with event names in the unified banner.
Review Request #12924 — Created March 27, 2023 and submitted
The change to prep for spina 2 and renaming event handlers to not use
ES6-private methods had some errors, preventing the mode switcher
drop-down from working correctly. This change fixes up the method names.
- Verified that the drop-down menu worked again.
- Audited event handler names to make sure we didn't have any other