Fix classloading in ConstructorCache #9774

Job	Run time
jdk11-build	34m 23s
jdk8-build	45m 20s
brazil-json-validation	14m 27s
migration-tests	7m 12s
native-image-test	20m 25s
s3-regression-tests-download	29m 31s
s3-regression-tests-upload-sync	6m 11s
jdk17-build	33m 13s
windows-jdk8-build	20m 42s
s3-regression-tests-control-plane	6m 57s
s3-regression-tests-upload-crt	5m 41s
s3-regression-tests-upload-multi	5m 12s
s3-regression-tests-upload-async	6m 40s
jdk21-build	33m 11s
endpoints-tests	31m 10s
sonar-cloud-build	45m 22s
	5h 45m 37s

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