Fix schedule POST deserialization

[nickfarrow]

Reordering the form causes a deserialization error on

let request: ChannelBatch = conf.deserialize_bytes(&bytes)?;

Not sure what is enforcing the error but let's just leave in this order for now

[nickfarrow]

Fixes this:

[DanGould]

This code isn't pushed to prod yet. Rather than push a bandaid, let's find and fix the root of the problem

[DanGould]

AFAICT this is because the deserialization depth was set to 2 when we're going deeper with channels[0][node].

I guess channels[0] got flattened to 1 depth somehow on the ordering, even if the semantics were wrong. Rebased to fix based on depth without reverting the UI (default is 16 anyhow)