The bug

Changing the new attribute fall_damage_multiplier to zero and then falling from a height that would otherwise cause fall damage will still result in fall damage particles being created. This is despite the fact that the "falling from a height" sound is not created in said situations, as well as the fact that the new safe_fall_distance attribute does change the height required for such particles to be created.

How to reproduce

1. /attribute [your name here] minecraft:generic.fall_damage_multiplier base set 0

2. Fall from a big enough height

Expected results

No fall damage, so no fall damage sound and no particles.

Actual results

No fall damage, so no fall damage sounds, but there are still particles.

How to fix

Do not create these particles if an entity does not take fall damage as a result of a fall. This logic would fix other issues such as MC-30391.