Cannot capture Custom Presses with Ctrl-I and Ctrl-M

The system seems to capture and send directly Ctrl-I and M as tab and return.
This is correct, but, we could capture and allow to differentiate for those who need it.

Via https://discord.com/channels/441939332442619905/441940293240225793/1464219643282722913

Start by locating the custom-press handling for Ctrl-I and Ctrl-M and trace how those inputs become tab and return. Confirm the existing behavior, then define the separate captured events while preserving normal tab and return handling; the issue is done when both presses can be differentiated for custom use.

Written by the indexing model from the issue text.