Crash on UnityEngine::Animation::SetGenericFloatPropertyValues when keyframing the RigBuilder component to Enabled and Disabled

Steps to reproduce:
1. Open the “Users attached project”
2. Add the “Users attached package” to the Project
3. Open the “smallerScene”
4. Enter Play Mode
5. Observe the crash

Reproducible with versions: 2021.3.43f1, 2022.3.47f1, 6000.0.19f1

Reproducible on: macOS 14.6.1 (Intel), Windows 10 (By the reporter)
Not reproducible on: no other environment tested

First few lines of Stack Trace:

0x00007ff6078de96a (Unity) UnityEngine::Animation::SetGenericFloatPropertyValues
0x00007ff607911004 (Unity) Animator::UpdateAvatars
0x00007ff607471d19 (Unity) DirectorManager::ExecuteProcessCallbacks
0x00007ff607472031 (Unity) `DirectorManager::InitializeClass'::`2'::FixedUpdateDirectorFixedUpdatePostPhysicsRegistrator::Forward
0x00007ff60716874c (Unity) ExecutePlayerLoop

Notes:

• If the issue does not reproduce on the first try, enter Play Mode a couple of times or select a couple of GameObjects in the Hierarchy as soon as Play Mode is entered
• Couldn’t test in Standalone Player due to the build failing