ci: extract package_check job into _check_package.yaml

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

Author: vdusek

.github/workflows/_check_package.yaml

@@ -0,0 +1,37 @@
+name: Package check
+
+on:
+  # Runs when manually triggered from the GitHub UI.
+  workflow_dispatch:
+
+  # Runs when invoked by another workflow.
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  package_check:
+    name: Package check
+    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

.github/workflows/on_pull_request.yaml

@@ -19,28 +19,7 @@ jobs:
 
   package_check:
     name: Package check
-    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
+    uses: ./.github/workflows/_check_package.yaml
 
   tests:
     name: Tests