Pass runBeforeMainModule option correctly when building prod bundles

Summary:
On D6248242, runBeforeMainModule was changed to `getModulesRunBeforeMainModule`, but the entry point used by opensource to build prod bundles was not updated. We couldn't catch this since we don't use this codepath internally

Fixes https://github.com/facebook/metro/issues/73

Reviewed By: mjesun

Differential Revision: D6556097

fbshipit-source-id: 889eaf825c7c3cdebe1ca4fc9831020a4a7d56dc

packages/metro/src/Server/__tests__/Server-test.js

@@ -439,7 +439,7 @@ describe('processRequest', () => {
               onProgress: null,
               platform: undefined,
               resolutionResponse: null,
-              runBeforeMainModule: [],
+              runBeforeMainModule: ['InitializeCore'],
               runModule: true,
               sourceMapUrl: null,
               unbundle: false,

packages/metro/src/Server/index.js

@@ -213,6 +213,9 @@ class Server {
     options = {
       ...options,
       deltaBundleId: null,
+      runBeforeMainModule: this._opts.getModulesRunBeforeMainModule(
+        options.entryFile,
+      ),
     };
 
     const fullBundle = await Serializers.fullBundle(

packages/metro/src/integration_tests/__tests__/basic_bundle-test.js

@@ -93,6 +93,7 @@ describe('basic_bundle', () => {
     const bundleWithPolyfills = await Metro.build(
       {
         assetRegistryPath: ASSET_REGISTRY_PATH,
+        getModulesRunBeforeMainModule: () => ['InitializeCore'],
         getPolyfills: () => [polyfill1, polyfill2],
         projectRoots: [INPUT_PATH, POLYFILLS_PATH],
         transformCache: Metro.TransformCaching.none(),
@@ -112,6 +113,7 @@ describe('basic_bundle', () => {
     const bundleWithoutPolyfills = await Metro.build(
       {
         assetRegistryPath: ASSET_REGISTRY_PATH,
+        getModulesRunBeforeMainModule: () => ['InitializeCore'],
         getPolyfills: () => [],
         projectRoots: [INPUT_PATH, POLYFILLS_PATH],
         transformCache: Metro.TransformCaching.none(),