The `metamask.send.from` field was assumed by various selectors to be
an object, but instead it was recently set to a string. The selectors
have been updated to assume it's a string, and to fetch the full
account object explicitly.
The selector `getSendFromObject` was repurposed for this, as that's
basically what it already did. The optional address parameter was
removed though, as that was only used to fetch the `from` address in
cases where the `send` state was set without there being a `from`
address set. That case is no longer possible, as the `from` address is
always set upon the initialization of the `send` state.
The `getSendFromObject` selector no longer fetches the 'name' of that
address from the address book state either. This property was not used
in either of the cases this selector was used.
Mark Stacey
f0f5554846