change inputInFocusedRegion such that it filters mouse scroll wheel input based on focus

[minimapletinytools]

Note even if we decide to merge #72 this PR should be merged as this seems like better behavior for inputInFocusedRegion anyways.

[ali-abrar]

I think this also needs e365940, which is what you had in 4eee394 - any reason that didn't work out?

[minimapletinytools]

I think this also needs e365940, which is what you had in 4eee394 - any reason that didn't work out?

It wasn't working for the file menu in tinytools-vty. I have the scroll bbar in a child pane to the pane that I want the scrolling action to happen in

       ╔═══════════════════════════════════╗                                                                                          
       ║pane that I want to scroll      ╔═╗║                                                                                          
       ║                                ║s║║                                                                                          
       ║                                ║c║║                                                                                          
       ║                                ║r║║                                                                                          
       ║                                ║o║║                                                                                          
       ║                                ║l║║                                                                                          
       ║                                ║l║║                                                                                          
       ║                                ║ ║║                                                                                          
       ║                                ║b║║                                                                                          
       ║                                ║a║║                                                                                          
       ║                                ║r║║                                                                                          
       ║                                ╚═╝║                                                                                          
       ╚═══════════════════════════════════╝