Adding opts when removing event listener

[sakin]

I'm not totally sure if this is the correct fix, but recently was trying to add a capture option when listening to an event on window. If you don't add the option when removing the event listener I don't believe it properly removes the listener.

Please let me know if there's a better way to do this, would love to learn!

[Sub-Xaero]

@sakin This looks perfect!
We already extract any non-standard opts at

stimulus-library/packages/mixins/src/use_event_listener.ts

Line 8 in 114052e

delete opts.debounce;

so opts will only contain the usual EventListener options

RemoveEventListener only cares about capture, whereas the opts contains the full set of options for AddEventListener, so if we wanted to be safe, we could extract the options that only AddEventListener cares about (i.e. once or passive) before passing opts to RemoveEventListener, but RemoveEventListener will safely ignore any options it doesnt understand, so we can pass it as is.

So, IHMO what you've got is perfect, lets get it merged!