Distinguish button press (keyboard/mouse) while NVDA is running

[Piralein]

(Web Platform)
Normally then a button is pressed via enter or spacebar the resulting JavaScript event will be a keyboard (ish) event, but with NVDA enabled it triggers a click event.

I implemented something like event.detail === 0 to automatically set focus on a different element, if the user used a keyboard, but not a mouse to activate a button. (like closing an overlay with a close button and then setting focus to a "open" button) Now with NVDA enables this doesn't work as there is no way to distinguish it. All event properties used to detect mouse clicks are present.

Does someone know a workaround or is my approach in itself flawed?

[hwf1324]

Please refer to @jcsteh's description in #11143 (comment).

And see other discussions: #11143, #15802