[frontend] redirect link updated for observables (#8483)

[ValentinBouzinFiligran]

Proposed changes

• in case of observable, the redirect link will send you on the overview page

Related issues

• Sightings tabs in observables are broken #8483

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.40%. Comparing base (dae148d) to head (09fd056).
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8695      +/-   ##
==========================================
+ Coverage   66.07%   66.40%   +0.32%     
==========================================
  Files         597      597              
  Lines       60913    60944      +31     
  Branches     6204     6273      +69     
==========================================
+ Hits        40246    40467     +221     
+ Misses      20667    20477     -190     

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