Arrows shot downwards get stuck in the player's own hitbox

Summary:
Firing an arrow straight down with low charge causes the arrow to immediately collide with the player's own hitbox. In Creative Mode, the arrow bounces off the player a few times. In Survival Mode, the player instantly takes damage from their own arrow, and the arrow disappears upon impact.

In Java Edition, arrows fired with a low charge from within the player's hitbox do not immediately collide with the player, allowing them to pass through safely without inflicting self-damage. This issue was not present in version 1.26.32.

Steps to reproduce:

1. Enter a world and equip a bow.

2. Look directly down.

3. Fire an arrow with zero charge (quick tap/click, without drawing the bow back).

4. Test this behavior in both Creative Mode and Survival Mode.

Observed results:
In Creative Mode: The arrow immediately hits the player's own hitbox, bounces a few times.

In Survival Mode: The arrow immediately hits the player, inflicting instant self-damage and disappearing.

Expected results:
Arrows fired downwards with a low charge should not immediately collide with the player's own hitbox. They should exit the player's hitbox smoothly without getting trapped or inflicting instant self-damage, matching Java Edition and previous Bedrock versions like 1.26.32.