Xcode build crashes on "Finalizer" with "Universal 3D Sample" project when the Spline package is installed

1. Open the attached “URPTemplate.zip” project
2. Build for macOS
3. Open the “Unity-iPhone.xcodeproj“ in Xcode
4. Build for the host machine
5. Observe the result

Actual result: App crashes on launch
Expected result: App launches without a crash

Reproducible with: 2.8.0 (2022.3.62f3)
Not reproducible with: 2.8.4 (6000.0.71f1)
Fixed in: 2.8.1 (2022.3.62f3)

Reproducible on: macOS 15.3.2 (24D81) (M1 Max)
Not reproducible on: No other environment tested

First few lines of the stack trace:
frame #0: 0x000000015380c664
frame #1: 0x000000015380c4a4
frame #2: 0x000000012417c038
frame #3: 0x00000001213e8558 libmonobdwgc-2.0.dylib`mono_gc_run_finalize + 708
frame #4: 0x00000001214285d4 libmonobdwgc-2.0.dylib`GC_invoke_finalizers + 164
frame #5: 0x00000001213ea358 libmonobdwgc-2.0.dylib`finalizer_thread + 940