[frontend] Fix toggle buttons display in headers (#5599)

[SouadHadjiat]

Proposed changes

• Remove toggleButtonGroup in headers since all toggle buttons are independent (replace it with a flex div)
• Fix knowledge graph header display when banner is displayed

Related issues

• Toggle buttons are broken in all headers #5599

Checklist

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7293b19) 66.30% compared to head (d7224c0) 66.29%.
Report is 1 commits behind head on master.

❗ Current head d7224c0 differs from pull request most recent head 4651f91. Consider uploading reports for the commit 4651f91 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5605      +/-   ##
==========================================
- Coverage   66.30%   66.29%   -0.01%     
==========================================
  Files         508      508              
  Lines       59808    59808              
  Branches     4373     4373              
==========================================
- Hits        39653    39651       -2     
- Misses      20155    20157       +2     

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