refactor(qcoverage): minor java21 refactoring based on IDEA suggestions

[newellf]

Description

Minor changes to formatting and to use Java21 features

How Has This Been Tested?

Unit tests

Are WDL Updates Required?

No

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[holmeso]

thumbs up