Circle CI: Use xlarge in Node jobs

Summary:
Use Circle CI's "xlarge" resource class in all Node jobs. This resource provides additional resources and should reduce execution time in our Node jobs.

Changelog: [Internal]

Reviewed By: cortinico

Differential Revision: D35294648

fbshipit-source-id: cfc175b4b327ca02d7094688f870cfea757915e6

.circleci/config.yml

@@ -55,10 +55,12 @@ executors:
     docker:
       # Note: Version set separately for Windows builds, see below.
       - image: circleci/node:16
+    resource_class: "xlarge"
   nodeprevlts:
     <<: *defaults
     docker:
       - image: circleci/node:14
+    resource_class: "xlarge"
   reactnativeandroid:
     <<: *defaults
     docker: