Improve padding/sizing of the global search box

[joepavitt]

Description

Before

After

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.74%. Comparing base (a92555d) to head (8f01523).
Report is 52 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4825   +/-   ##
=======================================
  Coverage   78.74%   78.74%           
=======================================
  Files         314      314           
  Lines       15093    15093           
  Branches     3476     3476           
=======================================
  Hits        11885    11885           
  Misses       3208     3208           

Flag	Coverage Δ
backend	78.74% <ø> (ø)

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[hardillb]

@cstns any reason not to merge this?

[cstns]

It may have slipped through the cracks, go ahead!