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Fill in the overview of this PR, what this PR is trying to achieve
Updates the timing of sending a challengeWelcome or playerWelcome email to the user from immediately when they sign up to after they successfully verify their email.
Test Plan
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Tested by verifying email for challengers and players and having the welcome email get sent after verification instead of before.
Follow ups
It is okay for the PR to be not perfect, list what you/other should work on after this PR is merged
Overview
Test Plan
Follow ups