Temporary workaround for https://github.com/ppy/osu/issues/26404.
It appears that some audio files do not behave well with BASS, leading
BASS to report a contradictory state of affairs (i.e. a track that is
in playing state but also not progressing). This appears to be related
to seeking specifically, therefore only enable the validation of
playback rate in the most sensitive contexts, namely when any sort of
score submission is involved.
6572fa4378