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* Remove outdated reference to Ctrl+/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/components/CommandBarOpenButton.tsx

@@ -1,5 +1,7 @@
 import { useCommandsContext } from 'hooks/useCommandsContext'
 import usePlatform from 'hooks/usePlatform'
+import { hotkeyDisplay } from 'lib/hotkeyWrapper'
+import { COMMAND_PALETTE_HOTKEY } from './CommandBar/CommandBar'
 
 export function CommandBarOpenButton() {
   const { commandBarSend } = useCommandsContext()
@@ -12,7 +14,7 @@ export function CommandBarOpenButton() {
     >
       <span>Commands</span>
       <kbd className="bg-primary/10 dark:bg-chalkboard-80 dark:group-hover:bg-primary font-mono rounded-sm dark:text-inherit inline-block px-1 border-primary dark:border-chalkboard-90">
-        {platform === 'macos' ? '⌘K' : '^/'}
+        {hotkeyDisplay(COMMAND_PALETTE_HOTKEY, platform)}
       </kbd>
     </button>
   )