[dev-server] fix debugger pause from devtools startup (#21807)

# Why

close ENG-7631

# How

this is a side effect of #21265 where we enable full feature devtools. the `Debugger.pause` events are sent by devtools frontend: https://github.com/ChromeDevTools/devtools-frontend/blob/e0d743c4f184589db10fb1d276b87dbe90498077/front_end/entrypoints/inspector_main/InspectorMain.ts#L62-L97. we reached the `waitForDebuggerInPage===true` case and then devtools frontend calls `debuggerModel.pause()`.

to skip the call path, we could either set `targetType=tab` or not set `panel=sources`. i am kinda afraid to change targetType which may cause other side effects, so to change the panel instead. with this pr, the initial devtools tab would be the "console" tab.

# Test Plan

bare-expo + devtools + sending js `fetch` call

packages/@expo/dev-server/src/JsInspector.ts

@@ -26,7 +26,7 @@ export async function openJsInspector(app: MetroInspectorProxyApp) {
 
   const urlBase = `https://chrome-devtools-frontend.appspot.com/serve_rev/@${devtoolsFrontendRev}/devtools_app.html`;
   const ws = app.webSocketDebuggerUrl.replace(/^ws:\/\//, '');
-  const url = `${urlBase}?panel=sources&ws=${encodeURIComponent(ws)}`;
+  const url = `${urlBase}?panel=console&ws=${encodeURIComponent(ws)}`;
   await closeJsInspector();
   openingBrowserInstance = await launchBrowserAsync(url);
 }