[frontend] Fix the height of the Observables distribution graph(#8599)

[CelineSebe]

Proposed changes

• height

Related issues

• Observables distribution graph is not respecting the height of the box  #8599

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 66.06%. Comparing base (66fa73c) to head (2555ade).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #8670   +/-   ##
=======================================
  Coverage   66.06%   66.06%           
=======================================
  Files         597      597           
  Lines       60913    60913           
  Branches     6206     6203    -3     
=======================================
  Hits        40241    40241           
  Misses      20672    20672           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.