fix: NetworkAnimator parameters writebuffer is limited [backport]

[NoelStephensUnity]

This is a backport of #3108.

This PR resolves the issue of exceeding the legacy parameter limitations defined within NetworkAnimator. Now, NetworkAnimator calculates how much space it needs to allocate to handle parameter serialization based on the Animator's defined parameters.

Changelog

• Fixed: Issue where NetworkAnimator would statically allocate write buffer space for Animator parameters that could cause a write error if the number of parameters exceeded the space allocated.

Testing and Documentation

• No tests were added.
• No documentation changes or additions were necessary.