[modules] Explicitly keep track of module requests.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index ef26a91fa9713579b483fdcc24008f5526ca45fd..450aa32eb5c10560ab17c8b312592186089e1ee3 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -7943,6 +7943,10 @@ Object* ModuleInfoEntry::module_request() const {
   return get(kModuleRequestIndex);
 }
 
+FixedArray* ModuleInfo::module_requests() const {
+  return FixedArray::cast(get(kModuleRequestsIndex));
+}
+
 FixedArray* ModuleInfo::special_exports() const {
   return FixedArray::cast(get(kSpecialExportsIndex));
 }