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Do not delete mock validator/serializer inmodel_rebuild() (#11890)

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Lines changed: 4 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -620,9 +620,11 @@ def model_rebuild(`
`620`	`620`	`cls.__pydantic_complete__=False`
`621`	`621`
`622`	`622`	`forattrin ('__pydantic_core_schema__','__pydantic_validator__','__pydantic_serializer__'):`
`623`		`-ifattrincls.__dict__:`
	`623`	`+ifattrincls.__dict__andnotisinstance(getattr(cls,attr),_mock_val_ser.MockValSer):`
`624`	`624`	`# Deleting the validator/serializer is necessary as otherwise they can get reused in`
`625`		`-# pydantic-core. Same applies for the core schema that can be reused in schema generation.`
	`625`	+# pydantic-core. We do so only if they aren't mock instances, otherwise — as `model_rebuild()`
	`626`	`+# isn't thread-safe — concurrent model instantiations can lead to the parent validator being used.`
	`627`	`+# Same applies for the core schema that can be reused in schema generation.`
`626`	`628`	`delattr(cls,attr)`
`627`	`629`
`628`	`630`	`if_types_namespaceisnotNone:`

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