This commit revises 903e9f2a02 based on feedback from the Spring Boot
team.
- The original loadContext(MergedContextConfiguration) method is no
longer deprecated.
- loadContext(MergedContextConfiguration, boolean) has been replaced by
loadContextForAotProcessing(MergedContextConfiguration) which is
implemented as a `default` method that throws an
UnsupportedOperationException.
- Affected code has been refactored to adjust to these changes.
See gh-28906
e3f4d810f6