fix(gatsby-source-wordpress): only diff wpgraphql schema if the user opts in (#38856) (#38860)

* only diff wpgraphql schema if the user opts in

* Update config.yml

---------

Co-authored-by: Michal Piechowiak <misiek.piechowiak@gmail.com>
(cherry picked from commit 5bd4c25)

Co-authored-by: Tyler Barnes <tylerdbarnes@gmail.com>

Author: gatsbybot

.circleci/config.yml

@@ -560,7 +560,7 @@ jobs:
             nvm install 18.0.0
             nvm alias default 18.0.0
             nvm use 18.0.0
-            choco install yarn
+            choco install yarn -y
       - run:
           name: Rebuild packages for windows
           command: |

packages/gatsby-source-wordpress/src/steps/create-schema-customization/helpers.js

@@ -336,10 +336,8 @@ function mergeDuplicateTypesAndReturnDedupedList(typeDefs) {
  * This is to catch and add helpful error messages for when an inconsistent schema between builds is inadvertently created due to some bug
  */
 export async function diffBuiltTypeDefs(typeDefs) {
-  if (
-    process.env.NODE_ENV !== `development` &&
-    process.env.WP_DIFF_SCHEMA_CUSTOMIZATION !== `true`
-  ) {
+  // only diff the schema if the user has opted in
+  if (process.env.WP_DIFF_SCHEMA_CUSTOMIZATION !== `true`) {
     return
   }