ci: add react version matrix to ci workflows

Author: joshblack

.github/workflows/ci.yml

@@ -55,6 +55,9 @@ jobs:
 
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        react: ['18', '19']
     steps:
       - name: Checkout repository
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
@@ -70,6 +73,8 @@ jobs:
           key: ${{ runner.os }}-turbo-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-turbo-
+      - if: ${{ matrix.react == '19' }}
+        run: node script/setup-react-19.mts
       - name: Install dependencies
         run: npm ci
       - name: Build
@@ -81,6 +86,9 @@ jobs:
 
   type-check:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        react: ['18', '19']
     steps:
       - name: Checkout repository
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
@@ -96,6 +104,8 @@ jobs:
           key: ${{ runner.os }}-turbo-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-turbo-
+      - if: ${{ matrix.react == '19' }}
+        run: node script/setup-react-19.mts
       - name: Install dependencies
         run: npm ci
       - name: Build project
@@ -105,6 +115,9 @@ jobs:
 
   examples:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        react: ['18', '19']
     steps:
       - name: Checkout repository
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
@@ -120,6 +133,8 @@ jobs:
           key: ${{ runner.os }}-turbo-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-turbo-
+      - if: ${{ matrix.react == '19' }}
+        run: node script/setup-react-19.mts
       - name: Install dependencies
         run: npm ci
       - name: Build