[#877] Better `transfer` errors on bad address

Description

Problem: The current setup of transfer uses the type of its first argument (signifying contract address) to determine the kind of the transfer (i.e. typechecked, unchecked, etc). Unfortunately, when the address isn't supported, it produces a very arcane type error. We should display more user-friendly type errors.

Solution: Add explicit TypeError cases to the InitialTransferMode type family.

Related issue(s)

Resolves #877 (closed)

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