a21c557101
Prior to this commit, BeanOverrideBeanFactoryPostProcessor replaced existing bean definitions with "pseudo" bean definitions; however, that is unnecessary. An existing BeanDefinition is suitable as-is and does not need to be replaced with a pseudo/fake definition. To address that, this commit reregisters an existing bean definition and only registers a new bean definition when creating a bean definition for a nonexistent bean. As a side effect, we no longer need to copy primary and fallback flags. Closes gh-33627
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