This reverts commit 0bef29d2.

remove hover theming for menus as it no longer applies
remove unnecessary and conflicting high contrast theme border
use border over outline like hc

* add log-telemetry-appender and wire it up in the shell

* enable log-only-telemetry in scripts/code.[sh|bat]

* Reduce noise, separate log file for telemetry

* Print telemetry events from shared process to corresponding log channel

* Telemetry events for cli go to the log file for cli

* Merge cli telemetry with all data with cli log

* Use LogAppender when running from source

* Skip check on isBuilt as the same is done in the shared process

* Telemetry events from main process go to corresponding log file

* Telemetry events from issue reporter go to corresponding log file

* Cleanup to reduce diff amount as I have OCD

* More cleanup

* Open telemetry log file via the Open Log File command

* Use regex to strip out common data

* Tests

fixes #54030

related to #54031

- avoid public modifier
- use Disposable where applicable
- fix some event handler leaks
- clean up some TODO@ben

Infrastructure to run experiments

* submenu registration, ignore && mnemonic rendering for now

* clean up ActionItems for Menu Widget and submenu

* clean up the update actions logic in menubar

* fix keyboard navigation for submenus

* add terminal menu and update submenu labels

* fix missing separator issue

* updating some aria labels

* bring back action runner to hide menu before running

* address feedback from @bpasero