ci: inline package-check recipe, drop shared reusable workflow indirection

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vdusek

.github/workflows/on_pull_request.yaml

@@ -19,14 +19,28 @@ jobs:
 
   package_check:
     name: Package check
-    uses: apify/workflows/.github/workflows/python_package_check.yaml@main
-    with:
-      package_name: apify_shared
-      src_package_dir: src/apify_shared
-      dist_dir: dist
-      python_version: "3.14"
-      smoke_code: |
-        from apify_shared.consts import WebhookEventType
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Set up uv package manager
+        uses: astral-sh/setup-uv@v8.1.0
+        with:
+          python-version: "3.14"
+
+      - name: Build sdist and wheel
+        run: uv run poe build
+
+      - name: Verify built package
+        uses: apify/workflows/python-package-check@main
+        with:
+          package_name: apify_shared
+          src_package_dir: src/apify_shared
+          dist_dir: dist
+          python_version: "3.14"
+          smoke_code: |
+            from apify_shared.consts import WebhookEventType
 
   tests:
     name: Tests