Player dies by falling from 22.00001 blocks instead of 23 blocks

A full-hearted player could die drom falling 22.00001 blocks instead of 23 blocks.

Relates to MC-167125.

Steps to reproduce:

1.Switch to survival (Make sure you are fall-hearted and no protection)

2./tp @s ~ ~22.00001 ~

3.Observe the result.

Observed result:

You will immediately die when hitting ground.

Expected result:

You will still have a half heart.