On a Dynamic Refresh Rate display (e.g. Surface 120Hz panels), stopping
playback with Match Refresh Rate enabled left Windows pinned to a fixed
60Hz with DRR disabled: the legacy EnumDisplaySettingsW capture only sees
the DRR base rate, and a DEVMODE ChangeDisplaySettingsExW restore cannot
express the CCD-level DISPLAYCONFIG_PATH_BOOST_REFRESH_RATE selection.
Capture a virtual-refresh-rate-aware QueryDisplayConfig snapshot of the
topology before the first display mutation and restore it through
SetDisplayConfig (saving to the database to repair the 24/48/60Hz
registry-workaround write-back), keeping the DEVMODE path as fallback.
The HDR toggle mode dances re-apply the same kind of snapshot, and crash
recovery returns to the persisted display configuration via
SDC_USE_DATABASE_CURRENT, verified against the recorded mode before the
legacy restore takes over.
close#2055
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