message: ref(nextjs): Export `BrowserTracing` integration directly from `@sentry/nextjs`
  Mostly to make linters happy.
diff: -import { configureScope, init as reactInit } from '@sentry/react';
  -import { defaultRequestInstrumentationOptions, Integrations } from '@sentry/tracing';
  +import { configureScope, init as reactInit, Integrations as BrowserIntegrations } from '@sentry/react';
  +import { defaultRequestInstrumentationOptions, Integrations as TracingIntegrations } from '@sentry/tracing';
  import { nextRouterInstrumentation } from './performance/client';
  import { MetadataBuilder } from './utils/metadataBuilder';
  @@ -9,7 +9,8 @@ import { addIntegration, UserIntegrations } from './utils/userIntegrations';
  export * from '@sentry/react';
  export { nextRouterInstrumentation } from './performance/client';
  -const { BrowserTracing } = Integrations;
  +const { BrowserTracing } = TracingIntegrations;
  +export const Integrations = { ...BrowserIntegrations, BrowserTracing };
  /** Inits the Sentry NextJS SDK on the browser with the React SDK. */
  export function init(options: NextjsOptions): void {
  