Crash on PPtr<Shader>::operator or NullException errors spammed in console when calling Dispose() on null GraphicsBuffer with baked Reflection Probes

How to reproduce:
1. Open the attached “IN-94094.zip” project
2. Open the “SampleScene”
3. In the Hierarchy window, select the “Reflection Probe” GameObject
4. From the Inspector window, click on Bake in the Reflection Probe component
5. Enter Play Mode
6. Exit Play Mode
7. Observe the crash

Reproducible in: 2022.3.59f1 (see note), 6000.0.40f1, 6000.1.0b8, 6000.2.0a5

Reproducible on: Windows 11
Not reproducible on: No other environments tested

First few lines of stakctrace:

0x00007FFDDA4D62AF (Unity) PPtr<Shader>::operator Shader * __ptr64
0x00007FFDDAA8DDAD (Unity) Material::SetKeyword
0x00007FFDDA8725BF (Unity) RenderingCommandBuffer::ExecuteCommandBufferWithState
0x00007FFDDA86EF3A (Unity) RenderingCommandBuffer::ExecuteCommandBuffer
0x00007FFDDA8F212C (Unity) ScriptableRenderContext::ExecuteScriptableRenderLoop
0x00007FFDD9F00C64 (Unity) ScriptableRenderContext_CUSTOM_Submit_Internal

Notes:

• In 2022.3.59f1, instead of crashing the Console is spammed with InvalidOperationException and ArgumentNullException errors (memory leak)
• The crash may reproduce after steps 4, 5 or 6 as it is a bit inconsistent
• Reimporting “OutlineRenderPass.cs” stops errors from appearing