Handle untracked products

[dominik-zeglen]

I want to merge this change because it handles variants that has inventory tracking disabled.

PR intended to be tested with API branch: master

Screenshots

Pull Request Checklist

1. All visible strings are translated with proper context.
2. All data-formatting is locale-aware (dates, numbers, and so on).
3. Translated strings are extracted.
4. Number of API calls is optimized.
5. The changes are tested.
6. Type definitions are up to date.
7. Changes are mentioned in the changelog.

[codecov]

Codecov Report

Merging #523 into master will increase coverage by 0.01%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##           master     #523      +/-   ##
==========================================
+ Coverage   72.00%   72.01%   +0.01%     
==========================================
  Files         709      709              
  Lines        8134     8137       +3     
  Branches     1335     1337       +2     
==========================================
+ Hits         5857     5860       +3     
  Misses       2020     2020              
  Partials      257      257              

Impacted Files	Coverage Δ
src/orders/components/OrderFulfillPage/fixtures.ts	100.00% <ø> (ø)
src/orders/queries.ts	100.00% <ø> (ø)
...s/components/OrderFulfillPage/OrderFulfillPage.tsx	91.83% <80.00%> (+0.53%)	⬆️

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