Python: Add samples syntax checking with pyright (#3710)

* Add samples syntax checking with pyright

- Add pyrightconfig.samples.json with relaxed type checking but import validation
- Add samples-syntax poe task to check samples for syntax and import errors
- Add samples-syntax to check and pre-commit-check tasks
- Fix 78 sample errors:
  - Update workflow builder imports to use agent_framework_orchestrations
  - Change content type isinstance checks to content.type comparisons
  - Use Content factory methods instead of removed content type classes
  - Fix TypedDict access patterns for Annotation
  - Fix various API mismatches (normalize_messages, ChatMessage.text, role)

* fixed a bunch of samples and tweaks to pre-commit

* updated lock

* updated lock

* fixes

* added lint to samples

python/pyrightconfig.samples.json

@@ -0,0 +1,13 @@
+{
+    "include": ["samples"],
+    "exclude": [
+        "**/autogen/**",
+        "**/autogen-migration/**",
+        "**/semantic-kernel-migration/**",
+        "**/demos/**",
+        "**/agent_with_foundry_tracing.py"
+    ],
+    "typeCheckingMode": "off",
+    "reportMissingImports": "error",
+    "reportAttributeAccessIssue": "error"
+}