How to reproduce:
1. Open the attached project ("monobehaviourPreprocessorBug.zip")
2. Click on the "ScriptWithAttributeCommaInNamespace" script (Assets -> Scripts -> ATestNamespace)
Expected result: The script is recognized as a MonoBehaviour
Actual result: "No MonoBehavior scripts in the file, or their names do not match the file name." warning is shown in the Inspector
Reproducible with: 2020.1.0a15, 2020.3.35f1, 2021.3.3f1, 2022.1.2f1, 2022.2.0a2
Not reproducible with: 2019.4.39f1, 2020.1.0a14, 2022.2.0a3, 2022.2.0a15
Reproducible on: macOS 12.1 (Intel)