Our recent switch from the `org.unbroken-dome.xjc` plugin to the
`com.github.bjornvester.xjc` plugin resulted in errors when trying to
import Spring Framework projects into the Eclipse IDE.
This commit fixes those issues as follows.
- @wilkinsona revised the XJC configuration in `spring-oxm.gradle` to
avoid the ConcurrentModificationException encountered when running
`./gradlew eclipse`.
- I added a workaround in `ide.gradle` to manually remove lingering
"main" classpath entries for sources generated by XJC.
Co-authored-by: Andy Wilkinson <andy.wilkinson@broadcom.com>
Closes gh-33264
5aa38833dd