refreshBalances() now reads the balance of every token tracked on the
active network, at every address, with balanceOf through the same
provider as the ETH balance. The entry takes its holder count and
decimals from Blockscout's entry for the token in the same refresh, or
keeps them from before while Blockscout fails. A failed balanceOf keeps
the token's previous entry, or takes Blockscout's entry when there is
none, and is logged. Blockscout's answer still adds the tokens the user
has not tracked, as before.
The browser test for a hostile symbol now untracks the stub token
first, because a tracked token is listed under the symbol it was added
with.
Model: opus-5-5
