When enabling Root Transform Position (Y) on an imported animation, gravity is applied when the GameObject also has only a Character Controller enabled

Steps to reproduce:
1. Unzip the attached user's project "AnimationGravityTest.zip"
2. Open "SampleScene.unity"
3. Enter Play Mode
4. Observe gravity in effect
5. View game object "Character"
6. Observe no Rigidbody, only "Animator" and "Character Controller"
7. Disable "Character Controller" and observe gravity stops
8. Inspect "Assets/Art/NPC/Characters/Character/Character@Idle.fbx"
9. Disable "Bake Into Pose" on Root Transform Position (Y) under the Animation category
10. Enter Play Mode and Observe gravity no longer in effect

Expected results: When enabling Root Transform Position (Y) on an imported animation, gravity is not applied when the object also has a character controller enabled
Actual results: When enabling Root Transform Position (Y) on an imported animation, gravity is applied when the object also has a character controller enabled

Reproducible with: 2021.3.31f1, 2022.3.10f1, 2023.1.15f1, 2023.2.0b12, 2023.3.0a7

Reproducible on: Windows 11, Windows 10
Not reproducible on: No other environment tested