Schema derived data is computed twice

[tovbinm]

Hello,

When profiling our service application (below) I noticed that Apollo Server generates schema derived data twice. Since it's a time consuming operation I would assume it should only be happening once. For the context here is our server code snippet and profiler chart:

export async function createViewMiddleware(params: ViewMiddlewareParams): Promise<ApolloMiddleware> {
	  const server = new ApolloServer({
	      schema: params.graphqlSchema,
	      plugins: params.plugins,
	      introspection: true,
	      mocks: false,
	      mockEntireSchema: false,
	      persistedQueries: false,
	      stopOnTerminationSignals: true,
	  });
	  await server.start();
	  return { middleware: toKoaMiddleware(server), server };
}

[glasser]

@sachindshinde Can you take a quick look at this? I think this might be expected due to the changes we made with SchemaManager and maybe it's avoidable? (Note that they are using {schema}, not gateway.

[sachindshinde]

@glasser It turned out to be avoidable without too much issue, PR to fix at #5757 .