[MC-250293] The "allay_dust" particle is unused

"allay_dust" particle exists within the game but is completely unused, no action you can do with Allays produces it, nor do they appear naturally

1. Simply type /particle minecraft:allay_dust
2. A blue allay-colored sparkle will appear
3. Note how this never appears in normal gameplay

Note, this probably relates to ~~MC-249814~~ and ~~MC-249754~~ as they are similar unused Allay features.