fix: the bundled token list names tokens on Ethereum Mainnet only (closes #632)

bundledToken(address, chainId) in tokenList.js answers only for Ethereum
Mainnet's chain id. Every reader of TOKEN_BY_ADDRESS now goes through it,
with the chain id of the transaction, balance or history entry it draws.
The token sources the screens build carry that chain id. The Uniswap
decoder sets the transaction's chain id on them. fetchTokenBalances()
takes the chain id of the network it asks about.

isSpoofedSymbol() takes the chain id of the token's network. It checks the
bundled list's symbols only on Ethereum Mainnet. The native asset's labels
stay reserved on every network.

Twenty existing tests and four shared test helpers read the bundled
list without naming a network. Each now names Ethereum Mainnet.

Model: opus-5-5

src/popup/views/send.js

@@ -12,7 +12,7 @@ const {
     goBack,
     tokenSourcesByChainId,
 } = require("./helpers");
-const { state, currentAddress } = require("../../shared/state");
+const { state, currentAddress, currentNetwork } = require("../../shared/state");
 let ctx;
 const { getProvider } = require("../../shared/balances");
 const { resolveTokenDecimals } = require("../../shared/approvalAmount");
@@ -154,7 +154,9 @@ function renderSendTokenSelect(addr) {
         // out. Its token's own screen can still send it: there
         // state.selectedToken picks the token, not this list.
         if (isBelowOneMillionth(t.balance)) continue;
-        if (isSpoofedSymbol(t.symbol, t.address)) continue;
+        if (isSpoofedSymbol(t.symbol, t.address, currentNetwork().chainId)) {
+            continue;
+        }
         if (fraudSet.has(t.address.toLowerCase())) continue;
         // An unknown holder count does not withhold a token the user holds:
         // only a count the explorer actually reported as below the threshold
@@ -238,6 +240,7 @@ function updateSendBalance() {
             token,
             addr.tokenBalances,
             state.trackedTokens,
+            currentNetwork().chainId,
         );
         // A null balance is a holding whose scale is unknown. Saying a figure
         // for it would be a claim about the amount, so it reads as the
@@ -393,6 +396,7 @@ function init(_ctx) {
                 token,
                 addr.tokenBalances,
                 state.trackedTokens,
+                currentNetwork().chainId,
             );
             ({ tokenDecimals } = tokenBalanceAndDecimals(addr, token));
         }