[DUOS-2693] Ensure that data location url is cleared visually

[fboulnois]

Addresses

https://broadworkbench.atlassian.net/browse/DUOS-2693

Summary

The data location URL is cleared in the underlying form value, but setting it to undefined does not cause a rerender.

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[rushtong]

👍🏽

[hams7504]

looks good!