Build rework - Jar attribute population

[jdaugherty]

Issue description

See https://github.com/apache/grails-core/pull/14093/files#r2020169530

[jdaugherty]

The jar attributes are how the grails version is currently determined. There appears to be multiple classes being checked for and thus multiple jars. We should consolidate to one to be consistent: https://github.com/apache/grails-data-mapping/blob/00fbc39170146c6ae844c66c7e2056a4e7565ba6/grails-datastore-core/src/main/groovy/org/grails/datastore/mapping/core/grailsversion/GrailsVersion.groovy#L147