fix(pubsub): fix out of order issue when exactly once is enabled #9472
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quartzmo
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Feb 26, 2024
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When processing receipt modack messages for exactly once delivery subscriptions, messages are added to a pending map. When creating the slice of successfully modack'ed messages, this map is referenced, which causes messages to be delivered out of order.
This PR adds tests for exactly once scenarios and also fixes a problem with deleting test subscriptions out of order.
Fixes #9401 #9440