Landing in creative mode doesn't disable flight

Publish_478003

Summary:
When the player lands on a surface in creative mode, flight doesn't get disabled. Instead when a player moves off the surface, they will remain floating as if in flight.

Impact:
Not game-breaking, just an annoyance as it's unclear when the player is or isn't in flight. A double tap of space is required every time you want to disable flight.

Repro Steps:
1. Create a new world with cheats enabled and creative mode
2. Fly up and then hold shift until you land on a block
3. Move off the block and notice how you are still floating
4. Double tap space to actually disable flight

Observed results:
The player remains in flight, even after landing on a surface.

Expected results:
Flight should be switched off whenever the player lands on a surface, just like it has always been in both Bedrock and Java.

Screenshots/videos attached:
No