Add warnings to order draft finalizing

[dominik-zeglen]

Resolves #3405
Resolves #3440

Screenshots

Pull Request Checklist

1. Privileged views and APIs are guarded by proper permission checks.
2. All visible strings are translated with proper context.
3. All data-formatting is locale-aware (dates, numbers, and so on).
4. Database queries are optimized and the number of queries is constant.
5. Database migration files are up to date.
6. The changes are tested.
7. The code is documented (docstrings, project documentation).
8. GraphQL schema and type definitions are up to date.
9. Changes are mentioned in the changelog.

[codecov]

Codecov Report

Merging #3431 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3431   +/-   ##
=======================================
  Coverage   89.66%   89.66%           
=======================================
  Files         237      237           
  Lines       12854    12854           
  Branches     1299     1299           
=======================================
  Hits        11525    11525           
  Misses        922      922           
  Partials      407      407

Impacted Files	Coverage Δ
saleor/graphql/checkout/types.py	86.53% <ø> (ø)	⬆️
saleor/graphql/order/types.py	85.95% <ø> (ø)	⬆️

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@b799170). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #3431   +/-   ##
=========================================
  Coverage          ?   89.67%           
=========================================
  Files             ?      237           
  Lines             ?    12793           
  Branches          ?     1285           
=========================================
  Hits              ?    11472           
  Misses            ?      920           
  Partials          ?      401

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[maarcingebala]

@dominik-zeglen I've updated the schema for canFinalize and isShippingRequired fields and regenerated the types.

[patrys]

Question: Should the "CONFIRM" button be green if there's a warning displayed? Shouldn't the button be named after the action it performs ("FINALIZE")? In case of warnings, shouldn't we make it "danger" color and change the text to "FINALIZE ANYWAY"?

[maarcingebala]

I'm +1 for the changes that @patrys mentioned.

[dominik-zeglen]

Okay, done

Issue has been resolved.