Move country explanation to correct input

[axlewin]

Restore the text above the school input to what it was before. Add the new text to the country input instead.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 43.53%. Comparing base (db64a99) to head (1676f8d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2360   +/-   ##
=======================================
  Coverage   43.53%   43.53%           
=======================================
  Files         601      601           
  Lines       25887    25887           
  Branches     8622     8622           
=======================================
  Hits        11269    11269           
- Misses      14561    14569    +8     
+ Partials       57       49    -8     

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