Handle Null Product Types

[brandon-1999]

Description (*)

Typecast product type data to stringify null values

Manual testing scenarios (*)

1. Place an order
2. Manually set an order item product type value to null
3. Observe sales_order_clean exception

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)

[pykettk]

@brandon-1999 Don't forget to sign the CLA so we can get this moving 🙂

[brandon-1999]

@magento run all tests

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[pykettk]

@magento run Functional Tests CE

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[pykettk]

@magento run Functional Tests EE

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The requested builds are added to the queue. You should be able to see them here within a few minutes. Please re-request them if they don't show in a reasonable amount of time.

[pykettk]

@magento run Integration Tests

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The requested builds are added to the queue. You should be able to see them here within a few minutes. Please re-request them if they don't show in a reasonable amount of time.