Tracks referencing the same sequencer don't work properly in package build

This issue is regression. It don't occur with 4.18.3.

Sequencer behavior differs between PIE and package build. As shown by the attached .png, in PIE one character moves, but in package build it appears to be duplicated. Probably, package build seems to have multiple sequencers always playing from the starting.

1. Open attach project and make windows package build.
2. Play package build.

At that time, sequencer behavior differs between PIE and package build.