Fix serialization for server functions

[lxsmnsyc]

Fixes #1323
Fixes #1299

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[ryansolid]

Ok this was just an optimization to early exit for simple data to not use Serovals format. And we have code on the client side to hopefully sidestep it as well on the deserialization side. I'm a little surprised by this fix, but if it fixes the problem it is fine. I'm probably missing some cases where headers are being used and deserialize stream is being called. I think we can add back optimization later.