Using the model with IK Constraints from Animation Rigging preview package (version 0.2.3) and setting Animator Override Controller on runtime results in Warning

To reproduce:

1. Download attached "InvalidOperationExceptionRepro2019.3.zip" project and open in Unity
2. Open "ReproScene" scene
3. Enter to Play Mode
4. Observe that Console spams Warnings:

"Could not resolve 'rig /ik/lfik' because it is not a child Transform in the Animator hierarchy"

"Could not resolve 'rig /ik/rfik' because it is not a child Transform in the Animator hierarchy"

"Could not resolve 'rig /ik' because it is not a child Transform in the Animator hierarchy"

"Could not resolve 'rig ' because it is not a child Transform in the Animator hierarchy"

Notes:
- Could not check for Regression on Unity 2018.4 and lower because the Project becomes Corrupted
- Could not check for Package Regression on preview - 0.1.4 and lower because the Project becomes Corrupted
- This is connected to the case 1180557
- More info is in Comments section

Reproduced on Package preview - 0.2.3 and preview - 0.2.1

Reproduced on 2019.2.4f1, 2019.3.0b2 and 2020.1.0a3