minecraft:buoyant component is dependent on the player's hardcoded collision box

Partner Rank:
3

Partner Team Reporting:
Entity Builds

Verification builds:
1.16.100.50 - 4459742

Summary:
minecraft:buoyant component is dependent on the player's hardcoded collision box, making players float very slightly above the water

Impact:
This bug prevents creators from using the minecraft:buoyant component reliably with players to simulate boats because we cannot raise them high enough above the water

Repro Steps:

1. Create a behavior pack which modifies the player behavior
2. Add the minecraft:buoyant component with a base_buoyancy of 1.0
3. Apply the pack to a world and enter the world

Observed Results:
The player will float very slightly above the water

Expected Results:
The player should float with at least half of its body above the water

Screenshots/Videos attached:
Yes

Regression Builds:
This has been an issue since the minecraft:buoyant component was introduced

Notes:
Making the player a spawnable entity and spawning it yields the expected results, which has led me to believe that the component depends on the player's hardcoded collision box. Note in the screenshot the collision box of the spawned-in player and its height above the water, it does not match the actual player