perf: make irregular full page reload go away (#19588)

* chore: Remove PlainChat instance from pages router

* do not dynamically import plain chat

apps/web/pages/_app.tsx

@@ -7,7 +7,6 @@ import CacheProvider from "react-inlinesvg/provider";
 import { trpc } from "@calcom/trpc/react";
 
 import type { AppProps } from "@lib/app-providers";
-import PlainChat from "@lib/plain/dynamicProvider";
 
 import "../styles/globals.css";
 
@@ -22,7 +21,6 @@ function MyApp(props: AppProps) {
 
   return (
     <SessionProvider session={pageProps.session ?? undefined}>
-      <PlainChat />
       {/* @ts-expect-error FIXME remove this comment when upgrading typescript to v5 */}
       <CacheProvider>
         {Component.PageWrapper ? <Component.PageWrapper {...props} /> : <Component {...pageProps} />}