While moving code, commit 874eaec487369f7fcaa9ed8c5f85569659565d4f added a condition `if (displayId == 0)` to register a rotation watcher, without good reasons. This condition was kept when the rotation watcher was moved to a fallback in e26bdb07a21493d096ea5c8cfd870fc5a3f015dc. Note: use `git show -b` to show this commit ignoring whitespace changes. Refs #5428 <https://github.com/Genymobile/scrcpy/issues/5428>