fix random key getting assigned in trial request (#724)
fix random key getting assigned in trial request (#724)

https://codecombat-core.slack.com/archives/C3BBBA01K/p1615039421247600
codecombat/codecombat,codecombat/codecombat,javatlacati/codecombat,codecombat/codecombat,javatlacati/codecombat,javatlacati/codecombat,javatlacati/codecombat,codecombat/codecombat,javatlacati/codecombat,codecombat/codecombat