This PR resolves #533 .

• The SonarCloud raised warning “refactor this code to not nest functions more than 4 levels deep” in public/src/admin/settings/navigation.js at line 100
• To address the warning, a helper function was added inside the nested function to reduce levels
• The changes passed linter and test suite, and were executed by UI operations with frontend console logs

Further notes on my attempts:

• The first issue I tried was Refactoring code in src/upgrades/1.2.0/category_recent_tids.js #468 ; however, after I passed all checks and tried with the UI operations, I realized there were no UI operations for upgrade
• The second issue I tried was Refactor code in src/database/mongo/sorted.js #515 ; however, when I was addressing the warning, I got a warning NODE_TLS_REJECT_UNAUTHORIZED and wasn't able to fixed it, even cloning again didn't help, so I deleted my fork and restarted
• For this current issue I resolved, public/src/admin/settings/navigation.js wasn't covered by the testing files; there was even no folder for public/src/admin/settings to add tests