Add embed-iframe import to error pages (#24475)

Import @calcom/embed-core/src/embed-iframe in both the error page component
and _error.tsx to ensure embed functionality is initialized when users
encounter 500 errors. This allows proper communication with parent frames
when the error page is displayed in an embedded context.

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

apps/web/components/error/error-page.tsx

@@ -2,6 +2,7 @@
 
 import React from "react";
 
+import "@calcom/embed-core/src/embed-iframe";
 import { HttpError } from "@calcom/lib/http-error";
 import { Button } from "@calcom/ui/components/button";
 

apps/web/pages/_error.tsx

@@ -7,6 +7,7 @@ import type { ErrorProps } from "next/error";
 import NextError from "next/error";
 import React from "react";
 
+import "@calcom/embed-core/src/embed-iframe";
 import { getErrorFromUnknown } from "@calcom/lib/errors";
 import { HttpError } from "@calcom/lib/http-error";
 import logger from "@calcom/lib/logger";