Allow both native text selection and mouse wheel scrolling

I tried using either WithMouseCellMotion or WithMouseAllMotion and they both seem to allow for scrolling a viewport with the mouse wheel but disable text selection/highlighting completely. Tried passing different flags to muesli's termenv to facilitate this, to no avail.

Would it be possible to allow both scrolling with mouse and text selection?

Start by tracing how WithMouseCellMotion and WithMouseAllMotion configure mouse reporting in Bubble Tea, then inspect the interaction with muesli's termenv. Confirm the terminal behavior for wheel scrolling and native text selection, and consider the work complete when both remain usable together with regression coverage for the supported mouse modes.

Written by the indexing model from the issue text.