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Remove it from request handler since there's already the context of the
request path, added through TraceLayer.

only do so if the alias matches the regex in the registration file

this also reverts some stateres changes

This fixes the panic from ruma "index out of bounds"

feat: first steps towards joining rooms over federation
Add state-res as a dependency of conduit
Add reverse_topological_power_sort before append_pdu
Implement statehashstatid_pduid tree for keeping track of state
Clean up implementation of state_hash as key for tracking state