Fix Commands button to show correct shortcut on Windows and Linux (#3625)

* Fix Commands button to show correct shortcut

* Fix onboarding to use the same shortcut reference

* Rename test file to be more general

* Add test for commands button text

* Remove outdated reference to Ctrl+/

* Change shortcut separator to be + and no spaces

* Add JSDocs and improve comments

* Add unit tests

* Change control modifier to regular ASCII caret

* Add browser test and fix platform detection

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu-latest)

* Add useful debug info to the error message

* Fix to display metaKey as Super on Linux

* Revert "A snapshot a day keeps the bugs away! 📷🐛 (OS: windows-latest)"

This reverts commit f8da90d5d2.

* A snapshot a day keeps the bugs away! 📷🐛 (OS: windows-latest)

* Approve snapshots

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Jess Frazelle <jessfraz@users.noreply.github.com>

src/lib/settings/initialKeybindings.ts

@@ -61,7 +61,7 @@ export const interactionMap: Record<
       name: 'toggle-command-palette',
       sequence: `${PRIMARY}+K`,
       title: 'Toggle Command Palette',
-      description: 'Always available. Use Ctrl+/ on Windows/Linux.',
+      description: 'Always available.',
     },
   ],
   Panes: [