Revert Checkstyle rule in Checkstyle.xml and Apply New Changes to HIRS_UTILS

[ThatSilentCoder]

I recently modified one of the modules in checkstyles.xml to ignore checks for Java constants that begin with an underscore. However, after further research and discussions with my colleagues, I believe we should revert this rule and instead update the Java constants to align with recommended Java guidelines. This change will help maintain code consistency and adherence to best practices. Apply the new changes to the entire HIRS_UTILS module.

Revert the following ...

        <module name="ConstantName">
            <property name="format"
                      value="[A-Z_][A-Z0-9]*(_[A-Z0-9]+)*$"/>
        </module>

to this:

<module name="ConstantName"/>