[bug]: default to valid initialValue for checkout form

[dani97]

Description

Fixes #1460

Related Issue

Closes #1460

Acceptance

Verification Stakeholders

@dpatil-magento

Specification

Verification Steps

Go to Venia and add a product to cart.
Click on checkout button.
Click on "Ship To" link. (Shipping address input form displayed)
Click anywhere in the page to close right drawer. (Just Dont Close right drawer by clicking X icon).
# to account via main menu.

Screenshots / Screen Captures (if appropriate)

Checklist

• I have updated the documentation accordingly, if necessary.
• I have added tests to cover my changes, if necessary.

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[dani97]

@sirugh on the exact situation reported by @dpatil-magento , null was sent as initialValue to the componenet.

[sirugh]

While this does fix the specific issue for the case of the address form it does not for other forms such as payment which you can reproduce by following the repro steps but instead of address form click payment form (and uncheck billing address is same as shipping).

Please apply the same fix to the paymentsForm component :)

[dani97]

While this does fix the specific issue for the case of the address form it does not for other forms such as payment which you can reproduce by following the repro steps but instead of address form click payment form (and uncheck billing address is same as shipping).

Please apply the same fix to the paymentsForm component :)

Fixed it 👍

Addressed