Crash on mecanim::animation::ValuesFromClip when clicking on a State Transition arrow in the Animator Controller with the 2D Animation package installed

How to reproduce:
1. Open the attached “IN-114224” project
2. Open the Assets folder in the Project Window
3. Open the “HitEffectMouth” Animator Controller
4. Click on any white arrow connecting the Animation States
5. Observe the crash

Reproducible with: 6000.2.0b2 (d4c40f50eb81), 6000.2.6f1, 6000.3.0b3, 6000.4.0a1
Not reproducible with: 6000.0.58f1, 6000.2.0b1 (d17678da8412)

Reproduced on: Windows 11
Not reproduced on: No other environment tested

Note: You might have to press the arrows a few times for the crash to reproduce

First few lines of the stack trace:
0x00007FFC688D0AC6 (Unity) mecanim::animation::ValuesFromClip<0>
0x00007FFC688A2645 (Unity) AnimationClipPlayable::ProcessAnimationPass
0x00007FFC688A1F1E (Unity) AnimationClipPlayable::ProcessAnimation
0x00007FFC688A1488 (Unity) AnimationMixerPlayable::MixerProcess
0x00007FFC688A20F7 (Unity) AnimationMixerPlayable::ProcessAnimation