LiteSpeed Cache: Exclude JS from Combine

[n7studios]

Summary

Fixes this reported issue by excluding Kit's scripts from LiteSpeed cache's JS Combine setting

Testing

Modified existing LiteSpeed cache tests to also enable the JS Combine setting, confirming forms display correctly.

Checklist

• I have written a test and included it in this PR
• I have run all tests and they pass
• The code passes when running the PHP CodeSniffer
• Code meets WordPress Coding Standards for PHP, HTML, CSS and JS
• Security and Sanitization requirements have been followed
• I have assigned a reviewer or two to review this PR (if you're not sure who to assign, we can do this step for you)