Some ParticleSystem fields do not get reverted

[Björn von der Osten]

When reverting a Prefab instance with a ParticleSystem component on it it some of its fields will not get reverted / are not detected as changed. I did not try everything, but some examples of problematic fields are: * Duration * enabled state of sub modules * "Velocity over Lifetime" module settings * "Color by Speed" modules settings

[Devon Klompmaker]

Fixed in 1.6b3 unless a regression is discovered.