Ensure the order tabs are not collapsed into a drop down

[elia]

Summary

The "Payments" tab in the admin order page was collapsed if the browser width was too narrow.
Also required solidusio/solidus#5423 to be merged to fix content ending up under the sidebar.

Checklist

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[codecov]

Codecov Report

Merging #315 (a65376b) into main (90894c8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #315   +/-   ##
=======================================
  Coverage   99.64%   99.64%           
=======================================
  Files          31       31           
  Lines         563      563           
=======================================
  Hits          561      561           
  Misses          2        2           

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