H7: Replace fully-qualified class names with imports and use var in HibernateCriteriaBuilder and CollectionBinder

[borinquenkid]

Summary

Two classes in grails-data-hibernate7 were ported from H5 code and carry style issues that were intentionally deferred from PR #15568 to keep the review surface focused on the H7 integration work.

Files

• grails-data-hibernate7/core/src/main/groovy/grails/orm/HibernateCriteriaBuilder.java

  • Many fully-qualified class names used inline (e.g. org.hibernate.Session, grails.gorm.DetachedCriteria) instead of imports
  • Local variable types that could use var

• grails-data-hibernate7/core/src/main/groovy/org/grails/orm/hibernate/cfg/domainbinding/binder/CollectionBinder.java

  • Local variable declarations that could use var (e.g. line 95)

Work

1. Replace inline FQCNs with import statements in HibernateCriteriaBuilder.java
2. Replace eligible local variable declarations with var in both files
3. Run ./gradlew :grails-data-hibernate7-core:test to verify no regressions

References

• PR Hibernate 7 - Step 2 #15568 (H7 Step 2) — review comments from @matrei