Avatar rendering issues and ghost avatars in Worlds

## Description

Metabeast reported that he either does not see his avatar while on his world, or he sees the avatar looking like on the screenshots (with dots). His friend went there with him and they could not see each other too.

He also is facing the issue where ghost avatars from GP followed him into his world, but they were on -141,78 and not at GP. Most of them disappeared quickly but one stayed until he left.

## Steps to Reproduce

N/A

## System

Windows

## Reproduction Index

- N/A

## Reporter

Flora

## Source

[Slack thread](https://decentralandteam.slack.com/archives/C05T5G3E9SN/p1782783256759089)

[Player Ile.log](https://github.com/user-attachments/files/29796594/Player.Ile.log)

Start by reviewing the attached Player Ile.log and the screenshots, then investigate the avatar behavior described for Windows users in Worlds. The report provides no reproduction steps or code entry point, so first determine whether the log identifies avatar rendering or world-position synchronization failures. Done means avatars render correctly for nearby players and ghost avatars do not persist after moving from GP.

Written by the indexing model from the issue text.