Prior to this commit, if an error was encountered during build-time AOT
processing, the error was logged at WARN/DEBUG level, and processing
continued.
With this commit, test AOT processing now fails on error by default. In
addition, the `failOnError` mode can be disabled by setting the
`spring.test.aot.processing.failOnError` Spring/System property to
`false`.
Closes gh-30977
3e5aa8d734