[Regions] Can’t resize a region to start at 0 with long files

[katspaugh]

Based on a (unverified) bug report: #3504

If the audio is 20+ minutes, region resizing becomes less accurate.

[Jagat-Brilworks]

Same problem but in all audio.

[xiaoliyooo]

Same problem but in all audio.同样的问题，但适用于所有音频。

resolved by #4199