Jira card: https://jira.unity3d.com/browse/GFXGI-547

Steps to repro:
1. Open the attached project;
2. Open the Test Runner window (Window>General>Test Runner);
3. In the context menu select Assets>Clear Shader Cache;
4. In the Test Runner window right click on the CrashAfterBakingNewSceneAfterPreviousBakeWithGPUPLM test (located under the RegressionChecks foldout) and click Run.

Expected result:
The test completes without stalls and errors.

Actual result:
The test stalls and never completes.
Regression introduced in Version 2021.2.0a5.

Workaround is to bake the scene manually and then eventual baking through the API works as expected.

Notes:
- Reproducible in 2021.2.0a15, 2021.2.0a5;
- Not reproducible in Version 2021.2.0a4, 2021.1.5f1, 2020.3.6f1;
- Reproducible on Windows + Mac;
- Not reproducible when Async Shader Compilation is disabled in the Project Settings.