The Bug:

Entities can be damaged by fire without being ignited.

In my testing, this issue did not occur in 24w38a.

Steps to Reproduce:

1. Obtain some flint and steel and put some fire on the ground.
2. Spawn an animal nearby and gently push it into the fire.
3. If the entity didn't catch on fire, repeat step 2.

Observed Behavior:

Entities can be damaged by fire without being ignited.

Expected Behavior:

Entities would not be damaged by fire without being ignited.