UI: improve supported-platforms page

[gdams]

Description of change

Makes the page a little slicker and fixes mobile issues

Checklist

• npm test passes
• documentation is changed or added (if applicable)
• permission has been obtained to add new logo (if applicable)
• contribution guidelines followed here

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[codecov]

Codecov Report

Attention: Patch coverage is 44.66667% with 83 lines in your changes missing coverage. Please review.

Project coverage is 81.52%. Comparing base (daf3a80) to head (e8ba5d1).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/components/Support/PlatformMatrix/index.tsx	44.29%	83 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1188      +/-   ##
==========================================
+ Coverage   80.78%   81.52%   +0.74%     
==========================================
  Files         157      157              
  Lines       11976    12014      +38     
  Branches      914      923       +9     
==========================================
+ Hits         9675     9795     +120     
+ Misses       2301     2219      -82     

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