What problem does this address?

The withIgnoreIMEEvents higher-order function ignores keyboard events during IME (Input Method Editor) composition. These events are intended to interact with the IME itself rather than the host application. More detailed documentation on its usage can be found here:

The documentation focuses on using the HOF with keyDown events, but keyUp events can also occur during IME composition. For accessibility, especially for CJK users, it's important to wrap both keyDown and keyUp handlers to ignore IME events.

Source:
https://developer.mozilla.org/en-US/docs/Web/API/Element/keyup_event#keyup_events_with_ime

What is your proposed solution?

Generalizing the docs will make this clearer.