Players can get stuck inside waterloggable blocks when switching from Spectator to Creative mode

Steps to reproduce:

1. In Creative mode, fly freely.

2. Switch to Spectator mode.

3. Move inside a waterloggable block (e.g., stairs, slabs, leaves).

4. Switch back to Creative mode.

Expected behavior:

• Player should be pushed out of the block, as collision detection should prevent overlapping with solid blocks.

Actual behavior:

• Player remains inside the waterloggable block until flying out or switching to Survival/Adventure mode.

• Non-waterloggable full blocks push the player out as expected.