[keyboard] Pressing Command-[key] breaks key sequences & shortcuts

[JacobZwang]

Describe the bug

When using useKeyDownSequence and createShortcut if you at any time use a shortcut such as Command-A, they will stop working as expected. This issue can be observed on the example provided in the keyboard package's readme.

1. Press Command + A.
2. Observe that the A stays in "Pressed Keys".
3. Press other keys and see they are added to the list with A. Notice the Control + E + R example does not work anymore.
4. Blur the window and notice the A is removed. Pressing A will also remove it.

I've observed this behavior on MacOS Chrome and Safari, have not tried on Windows.

Minimal Reproduction Link

https://codesandbox.io/s/solid-primitives-keyboard-demo-s2l84k?file=/index.tsx