[UI] Fix navigation sidebar visibility on global and settings pages

[Sn0w3y]

Summary

• Fixed navigation sidebar persisting incorrectly when navigating from device view to overview page
• Disabled new UI navigation on settings pages (/device/{id}/settings) which don't have navigation tree support
• Added URL-based check in setPosition() to properly disable navigation on global pages

How to test:

• Enable new UI in user settings
• Navigate to /device/{edgeId}/live - sidebar should be visible
• Click "Alle Systeme" to go to /overview - sidebar should disappear
• Navigate to /device/{edgeId}/settings - sidebar should not be visible
• Navigate back to /device/{edgeId}/live - sidebar should reappear

[codecov]

Codecov Report

❌ Patch coverage is 0% with 14 lines in your changes missing coverage. Please review.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3452      +/-   ##
=============================================
- Coverage      59.62%   59.62%   -0.00%     
  Complexity       112      112              
=============================================
  Files           2894     2894              
  Lines         124658   124672      +14     
  Branches        9343     9345       +2     
=============================================
+ Hits           74318    74326       +8     
- Misses         47522    47537      +15     
+ Partials        2818     2809       -9     

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