Forward all clicks by default for UHID/AOA

By default, only the left click is forwarded to the device, and
secondary clicks trigger shortcuts (the behavior can be configured by
--mouse-bind=xxxx).

But when the mouse mode is relative (AOA and UHID modes), forward all
clicks by default. This makes more sense since the cursor is handled on
the device side, the user expects all mouse buttons to be forwarded.

Refs <https://github.com/Genymobile/scrcpy/issues/4727#issuecomment-2069869750>
PR #5022 <https://github.com/Genymobile/scrcpy/pull/5022>