If a single test is run it works fine, but if "Run All" is used it only uses the correct default method in the first test. Even though Intersect is always used sometimes Equals is called instead, causing the error in the tests

Reproduction steps:
1. Open the user attached project
2. Open the Test Runner window (Window > General > Test Runner)
3. Click on "PlayMode"
4. Click on "Run All"

Expected result: All tests are successful
Actual result: Some tests fail

Reproducible with: 2021.2.12f1, 2022.1.0b9, 2022.2.0a5
Could not test with: 2019.4.36f1 (C#8 not supported), 2020.3.30f1 ("Target runtime doesn't support default interface implementation" error)