[frontend] fix widgets number alignment on default dashboard (#6412)

[lndrtrbn]

Proposed changes

• Remove hard coded height to fit parent content

Related issues

• Home dashboards number metrics loarders are not centered vertically #6412

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 ✅

Project coverage is 67.44%. Comparing base (12540ed) to head (9bd8478).
Report is 47 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6466      +/-   ##
==========================================
+ Coverage   67.31%   67.44%   +0.12%     
==========================================
  Files         541      541              
  Lines       65192    65230      +38     
  Branches     5415     5569     +154     
==========================================
+ Hits        43884    43994     +110     
+ Misses      21308    21236      -72     

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