beforeEvents.entityHurt: lack of immunity frames to players if the damage amount is initially fatal, but then altered via script

I have reported this initially in MCPE-167651, where the damage_sensor component had these results, and the recently added beforeEvents.entityHurt has brought it back.

If a player receives lethal damage, but the damage is modified to be nonlethal, the game continues to treat it as a fatal attack, resulting in no invulnerability frames being applied from taking damage.

Steps to reproduce:

1. Create a script to modify the damage that players take. For this example, I am simply going to make all damage players take equal to 3 damage.

   world.beforeEvents.entityHurt.subscribe((data) => {
     if (data.hurtEntity.typeId == "minecraft:player") {data.damage = 3}
   }

1. Open a test world with said script and apply a lethal amount of damage to the player (players only have 20 hit points, so anything 20 and above should be good enough)

Expected Results:
The player should take knockback, should turn red, should emit the hurt sound effect, should have invulnerability frames, and should receive 3 damage.

Results shown:
None of the expected results appear save for the correct amount of applied damage.