Fix issues with Opera startup

Opera seems to occasionally do a quick start-restart flicker as it
loads in recent versions, resulting in it reloading the hide-warning
page, which is no longer available after the first request.

No reason for us to stop that server quite so aggressively, so we now
keep it up for 10 seconds just in case this happens so more than one
load will work just fine.

Author: pimterry

src/interceptors/chromium-based-interceptors.ts

@@ -121,7 +121,9 @@ abstract class FreshChromiumBasedInterceptor implements Interceptor {
         if (browser.process.stderr) browser.process.stderr.pipe(process.stderr);
 
         await hideWarningServer.completedPromise;
-        await hideWarningServer.stop();
+        // We want to stop the warning server, but some browsers (Opera) sometimes reload during app startup,
+        // and this causes problems if it goes away quickly, so we wait just a moment first:
+        delay(10_000).then(() => hideWarningServer.stop());
 
         if (alreadyActive) return; // If we're just opening a new tab, we're done, don't track the process.