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, at the scale the screens read that token
at. Blockscout's answer adds only the tokens the user has not tracked,
admitted as before. A failed balanceOf keeps that token's previous row
and is logged; while Blockscout fails, the untracked rows from before
stay. A tracked token's row carries no decimals or holder count from
the explorer.
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
