Repro steps:
1. Import the attaches asset, or create a new system which is using particle strips.
2. Make sure the capacity*particle count exceeds 1,000,000.
3. Observe the console errors

Expected outcome:
- No errors and the in-graph error feedback to display the warning about having more than 1,000,000 particles.

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.VFX.UI.VFXView.RegisterError (UnityEditor.VFX.VFXModel model, UnityEditor.VFX.VFXErrorOrigin errorOrigin, System.String error, UnityEditor.VFX.VFXErrorType type, System.String description) (at D:/Projects/VFX/SRP - Other/com.unity.visualeffectgraph/Editor/GraphView/Views/VFXView.cs:633)
UnityEditor.VFX.VFXErrorManager.RegisterError (UnityEditor.VFX.VFXModel model, UnityEditor.VFX.VFXErrorOrigin errorOrigin, System.String error, UnityEditor.VFX.VFXErrorType type, System.String description) (at D:/Projects/VFX/SRP - Other/com.unity.visualeffectgraph/Editor/Models/VFXErrorManager.cs:46)
UnityEditor.VFX.VFXInvalidateErrorReporter.RegisterError (System.String error, UnityEditor.VFX.VFXErrorType type, System.String description) (at D:/Projects/VFX/SRP - Other/com.unity.visualeffectgraph/Editor/Models/VFXErrorManager.cs:68)

Notes:
- looks like it's caused by the error feedback improvement, but it's not accounting for strips, only for regular particles.