Make startup.js to account for the param orders

What does this MR do?

• Makes use of option.sort when using mergeUrlParams.

This MR solves the issue described in #250625 (closed).

The pre-work to add the sorting option to mergeUrlParms was done in !42561 (merged).

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Issue #250625 (closed)