fix: handle keyboard shortcuts with Ctrl key

[abeatrix]

fix: prevent default and stop propagation on certain key combos

Prevent default behavior on ctrl + non-allowlisted keys..
Also check for alt + vscode cody shortcuts and prevent default without stopping propagation.

This fixes issues with certain key combinations triggering unintended characters in input box.

• Add ctrlKeysAllowList Set to check pressed keys.
• Check ctrlKey or AltGraph modifier and that key is not in allow list.
• If so, prevent default browser shortcut and stop event propagation.

Test plan

Pressing CtrlKey with any of the keys in the allowed list should not add character to the chat inbox.

Before

Press alt+/ when chat box is focused. This shortcut will open a new Cody panel, but it will also add a symbol to your chat input box:

After

Press alt+/ when chat box is focused will not change your current input in the input box.

[philipp-spiess]

Nice!