Prior to this commit, it was possible to register hints for individual
test classes programmatically via the
org.springframework.test.context.aot.TestRuntimeHintsRegistrar SPI;
however, that requires that a custom TestRuntimeHintsRegistrar be
registered via "META-INF/spring/aot.factories". In addition,
implementing a TestRuntimeHintsRegistrar is more cumbersome than using
the core mechanisms such as @Reflective, @ImportRuntimeHints, and
@RegisterReflectionForBinding.
This commit address this by introducing support for @Reflective and
@ImportRuntimeHints on test classes. @RegisterReflectionForBinding
support is available automatically since it is an extension of the
@Reflective mechanism.
Closes gh-29455
ae3bec5d57