Add typesafe method to get generic bean by name with type reference

[quaff]

Fix GH-34687

[jhoeller]

Hey @quaff - revisiting this PR for 7.1, could you please:

• Remove the accidental changes to MultiReleaseJarPluginTests.
• Move the getBean(String, ParameterizedTypeReference) implementation to AbstractBeanFactory, declaring the method in the BeanFactory interface as non-default (since the entire interface does not use default methods so far).
• In BeanNotOfRequiredTypeException, change the existing Class<?> requiredType field to Type genericRequiredType (instead of adding a new field). In the existing getRequiredType() method, you could adapt the genericRequiredType field accordingly, for example: return (this.genericRequiredType instanceof Class<?> clazz ? clazz : ResolvableType.forType(this.genericRequiredType).toClass());
• Finally, update the @since tags to 7.1 please. I'm happy to merge it for 7.1 M1 then.

[quaff]

@jhoeller Updated as you suggested.

Move the getBean(String, ParameterizedTypeReference) implementation to AbstractBeanFactory, declaring the method in the BeanFactory interface as non-default (since the entire interface does not use default methods so far).

This result in code duplication since not every implementation extends AbstractBeanFactory.

[jhoeller]

Point taken - that said, a little bit of duplication is expected and acceptable, in particular in the rather special StaticListableBeanFactory and SimpleJndiBeanFactory cases.

However, in AbstractApplicationContext and StubWebApplicationContext, the goal is rather to pass the call through to the underlying BeanFactory along the following lines, similar to the surrounding methods there - which avoids two current cases of code duplication in favor of a delegation arrangement that preserves potentially customized behavior in the underlying BeanFactory:

	public <T> T getBean(String name, ParameterizedTypeReference<T> typeReference) throws BeansException {
		assertBeanFactoryActive();
		return getBeanFactory().getBean(name, typeReference);
	}

Feel free to tweak that in the PR, or otherwise I can also do it myself when merging.

[quaff]

Updated.

[jhoeller]

Perfect - thanks for your timely efforts there, @quaff!