This option impacts video and audio _playback_. For example, if we use
V4L2, the device is still "mirrored" (via V4L2), even if playback is
disabled. Therefore, "playback" is more approriate than "mirror".
The initial option --no-display option was renamed to --no-mirror by
commit 6928acdeac29eee404a7c7014654965ef5128b88, but this has never been
released, so it is ok to rename it one more time.
Refs #3978 <https://github.com/Genymobile/scrcpy/pull/3978#issuecomment-1549420103>
PR #4033 <https://github.com/Genymobile/scrcpy/pull/4033>
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