Powder snow slows down players even in creative mode

This bug report is a parity issue with Java.

Summary:

In the Java version, powder snow doesn't slow players down in creative flying mode, but slows down in bedrock.

Steps to Reproduce:

1. Turn on flight mode.
2. Fly through powder snow.

Observed Results:

Powder snow will slow down the player in creative mode in flight mode.

Expected Results:

Powder snow will not slow down the player.

Video:

Java.mp4

Bedrock.mp4