Versions of Windows before Win11 will crash when `CreateForMonitor` is
called, but the system has no attached displays. This can be avoided by
adding a check to ensure at least one display is found before we return
true in `IsMonitorValid`. Previously we would early return `true` if the
"monitor" we were checking was the `kFullDesktopScreenId`.
Bug: chromium:1316478
Change-Id: I2562fe3834db574cf3706ee1d604472ac03f9ff3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258920
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Austin Orion <auorion@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#36555}
740d704079