fix possible race condition

[brad-decker]

Explanation

There is no reason to use the async action creator updateRecipientUserInput and updateRecipient because they do a lot of extras that will never be necessary when evaluating a null input. This hopefully bypasses delays in clearing input.

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After

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Pre-Merge Checklist

• [ ] PR template is filled out
• [ ] IF this PR fixes a bug, a test that would have caught the bug has been added
• [ ] PR is linked to the appropriate GitHub issue
• [ ] PR has been added to the appropriate release Milestone

+ If there are functional changes:

• [ ] Manual testing complete & passed
• [ ] "Extension QA Board" label has been applied