make load able to pick json in macos chrome

[tmm1]

was having a hard time loading my saved json data on macos chrome

[codecov]

Codecov Report

Merging #1000 (6308cc8) into master (8c3090c) will decrease coverage by 0.38%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1000      +/-   ##
==========================================
- Coverage   54.20%   53.82%   -0.39%     
==========================================
  Files         229      229              
  Lines       11485    11485              
  Branches     1560     1560              
==========================================
- Hits         6226     6182      -44     
- Misses       5245     5289      +44     
  Partials       14       14              

Impacted Files	Coverage Δ
src/components/UserSettings.tsx	0.00% <ø> (ø)
src/redux/fs/Load.tsx	12.50% <ø> (ø)
src/forms/Y2020/irsForms/ScheduleEIC.ts	42.45% <0.00%> (-19.00%)	⬇️
src/forms/Y2021/irsForms/F8995.ts	77.77% <0.00%> (-14.82%)	⬇️
...020/irsForms/worksheets/ChildTaxCreditWorksheet.ts	97.50% <0.00%> (-2.50%)	⬇️
src/forms/Y2021/irsForms/F1040.ts	93.30% <0.00%> (-0.75%)	⬇️
src/components/TaxPayer/SpouseAndDependent.tsx	94.04% <0.00%> (+1.19%)	⬆️

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[thegrims]

LGTM