fix: NetworkAnimator generating AnimationCurve warnings

[NoelStephensUnity]

This PR resolves an issue where NetworkAnimator was building a delta check list for any parameter not controlled by AnimationCurve during initialization which could change during runtime. This update generates a delta check list for all parameters and culls out any parameter controlled by an AnimationCurve when checking for parameter deltas. This includes an additional minor fix to an issue that could occur where if the associated Animator (assigned to NetworkAnimator) was disabled in the editor it would spam exceptions to the console log.

MTT-5491
Related Github Issue:
#2391

Changelog

• Fixed: issue where runtime association of Animator properties to AnimationCurves would cause NetworkAnimator to attempt to update those changes.
• Fixed: issue where NetworkAnimator would not check if its associated Animator was valid during serialization and would spam exceptions in the editor console.indicate where the entry should go.

Testing and Documentation

• No tests have been added or modified.