Fix position desync with dead players (#928)

[MohabCodeX]

Dead players stopped sending position updates to server, causing getElementPosition() to return frozen death location instead of current position (e.g., after falling).
Fixed by allowing position sync for dead players on both client and server sides.

Results :

Your position: X=-710.00, Y=957.00, Z=12.40
Your position: X=-710.63, Y=957.88, Z=42.75 -> In air
Your position: X=-710.63, Y=957.88, Z=12.40 -> Dead player position after falling

• Fixes Position desync with dead players #928

[FileEX]

I don't think dead players can be synchronized if the time context doesn't match