In relative mouse modes (when the cursor appears on the device), it
makes more sense to forward all clicks (disable HOME/BACK shortcuts on
secondary clicks).
Transform the boolean option --forward-all-clicks into a 3-state option:
- --forward-all-clicks=true or --forward-all-clicks: enable
- --forward-all-clicks=false: disable
- --forward-all-clicks=auto (default): enable only for UHID and AOA
That way, by default, all clicks are forwarded with `scrcpy -M`.
Refs <https://github.com/Genymobile/scrcpy/issues/4727#issuecomment-2069869750>
PR #4877 <https://github.com/Genymobile/scrcpy/pull/4877>
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