[REGRESSION] Arrows teleport and desync underwater in 26.4 Snapshot 8 (Re-opened from MC-280224)

IMPORTANT NOTE: This is NOT a duplicate. This bug was previously marked as resolved under MC-280224, but it has regressed and is actively reproducing again in the latest snapshot. Please refer to the attached video for proof.

• Brief description of the issue:
  Arrows fired underwater or passing through water blocks experience a position desynchronization between the client and server, causing them to abruptly teleport or shift to different coordinates during flight.

• Steps to Reproduce:

1. Enter a body of water in Minecraft Java 26.4 Snapshot 8.

2. Equip a bow, fully charge it, and shoot an arrow underwater.

3. Observe the arrow's movement and trajectory.

• Expected Result:
  The arrow should slow down smoothly according to water physics without sudden position desynchronization or teleportation.

• Actual Result:
  The arrow suddenly teleports or desyncs to different coordinates during its underwater flight, as shown in the attached video.