Move DOM fixtures test job to main CI workflow (#22385)

Moves the RELEASE_CHANNEL_stable_yarn_test_dom_fixtures job to our new,
combined CI workflow.

After this, there are only two jobs remaining to be migrated. Then we
can delete the old workflow and build script.

.circleci/config.yml

@@ -274,7 +274,8 @@ jobs:
     environment: *environment
     steps:
       - checkout
-      - attach_workspace: *attach_workspace
+      - attach_workspace:
+          at: .
       - run: yarn workspaces info | head -n -1 > workspace_info.txt
       - *restore_node_modules
       - run:
@@ -352,9 +353,6 @@ workflows:
       - RELEASE_CHANNEL_stable_yarn_build:
           requires:
             - setup
-      - RELEASE_CHANNEL_stable_yarn_test_dom_fixtures:
-          requires:
-            - RELEASE_CHANNEL_stable_yarn_build
 
   experimental:
     unless: << pipeline.parameters.prerelease_commit_sha >>
@@ -457,6 +455,9 @@ workflows:
       - yarn_lint_build:
           requires:
             - yarn_build_combined
+      - RELEASE_CHANNEL_stable_yarn_test_dom_fixtures:
+          requires:
+            - yarn_build_combined
   fuzz_tests:
     unless: << pipeline.parameters.prerelease_commit_sha >>
     triggers:

fixtures/dom/package.json

@@ -20,7 +20,7 @@
   },
   "scripts": {
     "start": "react-scripts start",
-    "prestart": "cp ../../build/node_modules/scheduler/umd/scheduler-unstable_mock.development.js ../../build/node_modules/scheduler/umd/scheduler-unstable_mock.production.min.js ../../build/node_modules/react/umd/react.development.js ../../build/node_modules/react-dom/umd/react-dom.development.js ../../build/node_modules/react/umd/react.production.min.js ../../build/node_modules/react-dom/umd/react-dom.production.min.js ../../build/node_modules/react-dom/umd/react-dom-server.browser.development.js ../../build/node_modules/react-dom/umd/react-dom-server.browser.production.min.js ../../build/node_modules/react-dom/umd/react-dom-test-utils.development.js ../../build/node_modules/react-dom/umd/react-dom-test-utils.production.min.js public/ && cp -a ../../build/node_modules/. node_modules",
+    "prestart": "cp ../../build2/oss-stable/scheduler/umd/scheduler-unstable_mock.development.js ../../build2/oss-stable/scheduler/umd/scheduler-unstable_mock.production.min.js ../../build2/oss-stable/react/umd/react.development.js ../../build2/oss-stable/react-dom/umd/react-dom.development.js ../../build2/oss-stable/react/umd/react.production.min.js ../../build2/oss-stable/react-dom/umd/react-dom.production.min.js ../../build2/oss-stable/react-dom/umd/react-dom-server.browser.development.js ../../build2/oss-stable/react-dom/umd/react-dom-server.browser.production.min.js ../../build2/oss-stable/react-dom/umd/react-dom-test-utils.development.js ../../build2/oss-stable/react-dom/umd/react-dom-test-utils.production.min.js public/ && cp -a ../../build2/oss-stable/. node_modules",
     "build": "react-scripts build && cp build/index.html build/200.html",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"