Move checkout back to individual actions

Can't reference a composite action until the repo is checked out

Author: aduth

.github/actions/build-design-system-docs/action.yml

@@ -5,18 +5,15 @@ description: Build the Design System Docs site
 runs:
   using: composite
   steps:
-    # 1. Checkout the PR code
-    - uses: actions/checkout@v4
-
-    # 2. Set up Node
+    # 1. Set up Node
     - uses: actions/setup-node@v4
       with:
         node-version-file: .nvmrc
         cache: yarn
 
-    # 3. Install dependencies for just the design-system-docs package
+    # 2. Install dependencies for just the design-system-docs package
     - run: yarn workspaces focus --production @automattic/design-system-docs
 
-    # 4. Build the design-system-docs workspace
+    # 3. Build the design-system-docs workspace
     - name: Build design system docs
       run: yarn workspace @automattic/design-system-docs build

.github/workflows/ds-docs-deploy-production.yml

@@ -20,10 +20,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      # 1. Build the Design System Docs site
+      # 1. Checkout the PR code
+      - uses: actions/checkout@v4
+
+      # 2. Build the Design System Docs site
       - uses: ./.github/actions/build-design-system-docs
 
-      # 2. Upload over SSH to the production server
+      # 3. Upload over SSH to the production server
       - name: Sync to production server
         env:
           # See: https://wp.me/p9o2xV-5Da#comment-11607

.github/workflows/ds-docs-pr-preview.yml

@@ -21,13 +21,16 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      # 1. Build the Design System Docs site
+      # 1. Checkout the PR code
+      - uses: actions/checkout@v4
+
+      # 2. Build the Design System Docs site
       - uses: ./.github/actions/build-design-system-docs
 
-      # 2. Install Wrangler
+      # 3. Install Wrangler
       - run: npm install -g wrangler
 
-      # 3. Upload a new Worker version and capture the preview URL
+      # 4. Upload a new Worker version and capture the preview URL
       - name: Upload Worker version
         id: upload
         env:
@@ -46,15 +49,15 @@ jobs:
           # Expose it to later steps
           echo "url=$URL" >> "$GITHUB_OUTPUT"
 
-      # 4. Try to find an existing comment with our marker
+      # 5. Try to find an existing comment with our marker
       - name: Find preview comment
         id: find_comment
         uses: peter-evans/find-comment@v3
         with:
           issue-number: ${{ github.event.pull_request.number }}
           body-includes: '<!-- cf-preview-comment -->'
 
-      # 5. Create or update a comment that shows the preview URL
+      # 6. Create or update a comment that shows the preview URL
       - name: Comment (create or update)
         uses: peter-evans/create-or-update-comment@v4
         with: