Main panel scrolling broken when running lazygit under tmux with 0.62.x versions

### Describe the bug
selecting a file to view diffs, the main pane (0) shows the text, but it is no longer scrollable when running under tmux.

running lazygit 0.62.x versions in a raw gnome terminal works fine, but running in a tmux session no longer works. It worked fine in 0.61.x

### To Reproduce
launch tmux session
go to git controlled dir
run lazygit
select file to show diffs
no mouse scrolling text (it scrolls the wrong pane)
unable to select the text/diff view (panel 0) with mouse
selecting panel 0 by pressing entering 0 highlights that panel, but scroll wheel still scrolls previous panel

probably related:
unable to use mouse to select items in the repo selector window (ctrl-R)

### Expected behavior
scrolling of text
selecting text panel 0 with mouse
ability to select repos with mouse

### Version info:
0.62.1
0.62.2

### Terminal info:
tmux within gnome terminal on mint/cinnamon and also lmde