Support right-click exit in screenshot state

[Poto]

You can only press Esc to exit after entering the screenshot state

I want to exit the screenshot state by pressing the right button, which is an idle function that can be utilized to

[Pesala]

@Poto Both right-click and left-click already work to cancel a screen capture.

Note that you have to make a selection first.

[Poto]

@Pesala I'd like to be able to exit the screenshot state by right clicking when there is no selection as well

[Pesala]

Click on Selection, then Left-click or Right-click on the page. No selection needs to be made, it just needs to be the default capture method.

[Poto]

@Pesala There is no need to take this extra step.
I know this is the way to go at the moment, but wouldn't it be better if you could just quit?