[flutter_runner] Plumb Flutter component arguments to the Dart entrypoint (#12026)

port of Change-Id: Ibcd4a110b84805af02a436a2a5bcf2cf3d2029a4

shell/platform/fuchsia/flutter/component.cc

@@ -92,8 +92,7 @@ Application::Application(
 
   // LaunchInfo::arguments optional.
   if (auto& arguments = launch_info.arguments) {
-    settings_ = flutter::SettingsFromCommandLine(fml::CommandLineFromIterators(
-        arguments.value().begin(), arguments.value().end()));
+    settings_.dart_entrypoint_args = arguments.value();
   }
 
   // Determine /pkg/data directory from StartupInfo.