[ci] Add new yarn test GitHub action

Copies the existing circleci workflow for yarn test into GitHub
actions. I didn't remove the circleci job for now just to check for
parity.

Opted to keep the same hardcoded list of params rather than use GitHub's
matrix permutations since this was intentional in the circleci config.

ghstack-source-id: 4052e9bcd42eeb0eb1950ed7f762c2b153be1d20
Pull Request resolved: #30032

.github/workflows/runtime_test.yml

@@ -0,0 +1,55 @@
+name: React Runtime (Test)
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    paths-ignore:
+      - 'compiler/**'
+
+jobs:
+  test:
+    name: yarn test
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    strategy:
+      matrix:
+        # Intentionally passing these as strings instead of creating a
+        # separate parameter per CLI argument, since it's easier to
+        # control/see which combinations we want to run.
+        params: [
+          "-r=stable --env=development",
+          "-r=stable --env=production",
+          "-r=experimental --env=development",
+          "-r=experimental --env=production",
+          "-r=www-classic --env=development --variant=false",
+          "-r=www-classic --env=production --variant=false",
+          "-r=www-classic --env=development --variant=true",
+          "-r=www-classic --env=production --variant=true",
+          "-r=www-modern --env=development --variant=false",
+          "-r=www-modern --env=production --variant=false",
+          "-r=www-modern --env=development --variant=true",
+          "-r=www-modern --env=production --variant=true",
+          "-r=xplat --env=development --variant=false",
+          "-r=xplat --env=development --variant=true",
+          "-r=xplat --env=production --variant=false",
+          "-r=xplat --env=production --variant=true",
+          # TODO: Test more persistent configurations?
+          "-r=stable --env=development --persistent",
+          "-r=experimental --env=development --persistent"
+        ]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18.x
+          cache: "yarn"
+          cache-dependency-path: yarn.lock
+      - name: Restore cached node_modules
+        uses: actions/cache@v4
+        id: node_modules
+        with:
+          path: "**/node_modules"
+          key: ${{ runner.arch }}-${{ runner.os }}-modules-${{ hashFiles('yarn.lock') }}
+      - run: yarn install --frozen-lockfile
+      - run: yarn test ${{ matrix.params }} --ci