chore: migrate PR-2812 remove animator requirement

[NoelStephensUnity]

Migrating #2812 over to public repository based PR.

Changelog

• Changed: NetworkAnimator no longer requires the Animator component to exist on the same GameObject.

Testing and Documentation

• No tests have been added.
• Potential documentation updates required (wip)

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1 out of 2 committers have signed the CLA.

✅ NoelStephensUnity
❌ jeffgamedev

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