fix: mac hotkeys (fix #1907)

[edikdeisling]

Description

PR about hotkeys from here

On Mac "option" key modifies the resulted event.key value (s becomes ß) that's why check event.key === 's' doesn't work.
According to mdn's KeyboardEvent: code article we can't fix the bug with event.code === 'KeyS' because on different keyboard layouts symbol will be different.

For example, the code returned is "KeyQ" for the Q key on a QWERTY layout keyboard,
but the same code value also represents the ' key on Dvorak keyboards and the A key
on AZERTY keyboards. 

That makes it impossible to use the value of code to determine what the name of the 
key is to users if they're not using an anticipated keyboard layout.

So I just added the resulting keys to the whitelist.

Additional context

There is another old PR but with a different fix
https://github.com/vuejs/devtools/pull/1993

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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