fix: the address and token screens and the address scan no longer log requests a popup reload cancels (closes #475)

The transaction lists on the address and token screens, the address scan
after a wallet is created, and the endpoint checks in Settings now check
the signal the popup aborts on pagehide before reporting a failed request,
as the home screen and the balance refresh already do. scanForAddresses()
takes the signal ahead of its gap limit.

End-to-end tests reload the popup on the address screen with Blockscout
held, and during the address scan with its requests held. Jest tests show
the transaction lists, the scan and the Settings checks report a real
failure and stay silent once the popup has closed. The transaction detail
and confirmation screens are left out: they do not keep the popup context.

Model: opus-5-5

tests/e2e/run.js

@@ -249,8 +249,23 @@ test("the exact confirmation phrase erases the record and reloads into Welcome (
     }
 });
 
-test("wallet creation through the UI reaches the main view", async (env) => {
-    env.phrase = await createWallet(env.page);
+// The address scan that follows creating the wallet is held, so the popup
+// reloads while it is in flight. As for the reloads mid-refresh further down,
+// the assertion for that is the harness's own: a console.error from the page
+// being reloaded fails this test (#475).
+test("wallet creation through the UI reaches the main view, and reloading mid-scan reports no failure (#475)", async (env) => {
+    env.routeOpts.holdTransactionCount = true;
+    try {
+        const scanning = env.page.waitForRequest((r) =>
+            (r.postData() || "").includes("eth_getTransactionCount"),
+        );
+        env.phrase = await createWallet(env.page);
+        await scanning;
+        await env.page.reload();
+    } finally {
+        env.routeOpts.holdTransactionCount = false;
+    }
+    await visible(env.page, "#view-main");
     assert(
         env.phrase.split(/\s+/).length >= 12,
         "wallet creation did not yield a recovery phrase",
@@ -700,9 +715,8 @@ test("the token contract row links to the explorer's token page (#151)", async (
 //
 // Reloading or closing the popup makes Chrome cancel the requests it still has
 // open, and in the page a cancelled fetch() fails with the same "Failed to
-// fetch" as a server that cannot be reached. Here rather than straight after
-// wallet creation because a reload also cancels the address scan that follows
-// it, which still logs (#475).
+// fetch" as a server that cannot be reached. The reload during the address
+// scan that follows creating a wallet is in the wallet creation test (#475).
 
 // Blockscout is held, so the home screen's transaction list and token balances
 // cannot have been answered when the popup reloads. The assertion is the
@@ -752,6 +766,30 @@ test("a transaction list that cannot be fetched is still reported (#218)", async
     }
 });
 
+// The address screen's transaction list, held the same way. The popup reopens
+// on the address screen, which asks for its list as it is drawn, so once the
+// screen is up its request is in flight (#475).
+test("reloading the popup on the address screen reports no failure (#475)", async (env) => {
+    await openAddressDetail(env.page);
+    await waitForPersisted(
+        env.page,
+        "currentView",
+        "address",
+        "before reloading the popup",
+    );
+    env.routeOpts.holdBlockscout = true;
+    try {
+        await env.page.reload();
+        await visible(env.page, "#view-address");
+        await env.page.reload();
+    } finally {
+        env.routeOpts.holdBlockscout = false;
+    }
+    await visible(env.page, "#view-address");
+    // Home again, where the tests below expect to start.
+    await goHome(env.page);
+});
+
 // -------------------------------------------- recovery phrase (#161)
 
 // The gear toggles, so pressing it while Settings is already up leaves it.
@@ -2163,9 +2201,7 @@ function quantity(wei) {
 
 // Wait on the main view until a changed balance fixture has been picked up.
 //
-// Not a reload: the popup re-refreshes on a 10-second timer by itself, and a
-// reload on the address screen still logs the transaction list it cancels
-// (#475).
+// Not a reload: the popup re-refreshes on a 10-second timer by itself.
 //
 // It also deliberately settles on MAIN rather than on the address screen.
 // The address screen builds the send screen's token dropdown once, from the
@@ -4525,6 +4561,9 @@ async function main() {
         ethBalanceWei: null,
         failGasEstimate: false,
         holdGasEstimate: false,
+        // Whether a JSON-RPC batch asking for a transaction count is held
+        // unanswered: the address scan after creating a wallet (#475).
+        holdTransactionCount: false,
         // Whether Blockscout requests are held unanswered, and whether an
         // address's transaction list fails as a network error (#218).
         holdBlockscout: false,