Pass BundlerConfig through to Relay Integration (#18393)

I wasn't sure we needed this but looks like it'll come in handy.

packages/react-flight-dom-relay/src/ReactFlightDOMRelayServer.js

@@ -8,12 +8,19 @@
  */
 
 import type {ReactModel} from 'react-server/src/ReactFlightServer';
-import type {Destination} from './ReactFlightDOMRelayServerHostConfig';
+import type {
+  BundlerConfig,
+  Destination,
+} from './ReactFlightDOMRelayServerHostConfig';
 
 import {createRequest, startWork} from 'react-server/src/ReactFlightServer';
 
-function render(model: ReactModel, destination: Destination): void {
-  let request = createRequest(model, destination, undefined);
+function render(
+  model: ReactModel,
+  destination: Destination,
+  config: BundlerConfig,
+): void {
+  let request = createRequest(model, destination, config);
   startWork(request);
 }
 

packages/react-flight-dom-relay/src/ReactFlightDOMRelayServerHostConfig.js

@@ -11,6 +11,7 @@ import type {Request, ReactModel} from 'react-server/src/ReactFlightServer';
 
 import type {
   Destination,
+  BundlerConfig,
   ModuleReference,
   ModuleMetaData,
 } from 'ReactFlightDOMRelayServerIntegration';
@@ -25,17 +26,16 @@ import {
 
 export type {
   Destination,
+  BundlerConfig,
   ModuleReference,
   ModuleMetaData,
 } from 'ReactFlightDOMRelayServerIntegration';
 
-export type BundlerConfig = void;
-
 export function resolveModuleMetaData<T>(
   config: BundlerConfig,
   resource: ModuleReference<T>,
 ): ModuleMetaData {
-  return resolveModuleMetaDataImpl(resource);
+  return resolveModuleMetaDataImpl(config, resource);
 }
 
 type JSONValue =

packages/react-flight-dom-relay/src/__mocks__/ReactFlightDOMRelayServerIntegration.js

@@ -23,7 +23,7 @@ const ReactFlightDOMRelayServerIntegration = {
     });
   },
   close(destination) {},
-  resolveModuleMetaData(resource) {
+  resolveModuleMetaData(config, resource) {
     return resource;
   },
 };

scripts/flow/react-relay-hooks.js

@@ -17,6 +17,7 @@ type JSONValue =
 
 declare module 'ReactFlightDOMRelayServerIntegration' {
   declare export opaque type Destination;
+  declare export opaque type BundlerConfig;
   declare export function emitModel(
     destination: Destination,
     id: number,
@@ -33,6 +34,7 @@ declare module 'ReactFlightDOMRelayServerIntegration' {
   declare export opaque type ModuleReference<T>;
   declare export type ModuleMetaData = JSONValue;
   declare export function resolveModuleMetaData<T>(
+    config: BundlerConfig,
     resourceReference: ModuleReference<T>,
   ): ModuleMetaData;
 }