[release/9.0-staging] Don't scaffold NonNullableConventionState annotation #35359
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This means it gets correctly filtered out when using the model for code generation, and hence we don't try to generate a literal for it. Fixes #34996
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maumar
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Jan 6, 2025
This was referenced Jul 22, 2025
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Fixes #34996
Port of #35020
Description
NonNullableConventionBaseconvention adds an annotation to the model containing a cachedNullabilityInfoContextto be used during model building. Usually, it's removed before the model is finalized, but in certain cases another convention can request it during finalization after the cache is removed causing the annotation to be added back to the model.Customer impact
An exception is thrown when adding a new migration or a compiled model for affected models (mostly with types containing a field that's a primitive collection). There is workaround via model configuration, but it's usually not practical because the exception doesn't provide any clues on what property caused it:
How found
Multiple customer reports on 8 and 9.
Regression
Yes, from 7, but started affecting even more models in 9.
Testing
Test added
Risk
Low.