Bean Overrides cannot reliably override beans created by a FactoryBean with generics

[sbrannen]

Overview

This issue is effectively a duplicate of the spring-projects/spring-boot#40234 bug report against Spring Boot which was fixed in Spring Boot after the @SpyBean had been ported to Spring Framework in conjunction with #29917.

Thus, I'm creating this issue to ensure that bug is fixed in Spring Framework's Bean Override support as well.

Related Issues

• Provide a safe way to override and mock beans in the TestContext framework #29917
• Introduce missing tests for Bean Override features #33742
• Type-based bean name resolution with fallback matching for incomplete generics #32649
• Starting from 3.2.x, @SpyBean is not able to initialise MongoRepository bean of the generic type spring-boot#40234