[python] migrate python weblog to ddtrace.aiguard imports (#7334)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: avara1986

utils/build/docker/python/flask/app.py

@@ -2231,13 +2231,22 @@ def external_request_redirect():
 @app.route("/ai_guard/evaluate", methods=["POST"])
 def ai_guard_evaluate():
     """AI Guard evaluation endpoint."""
-    from ddtrace.internal.settings.asm import ai_guard_config
+    # AI Guard was moved from `ddtrace.appsec.ai_guard` to the top-level `ddtrace.aiguard`
+    # package (dd-trace-py#18754, #19110). Import the new location first and fall back to
+    # the old one to stay compatible with every tracer version under test.
+    try:
+        from ddtrace.internal.settings.aiguard import aiguard_config
+    except ImportError:
+        from ddtrace.internal.settings.asm import ai_guard_config as aiguard_config
 
-    if not ai_guard_config._ai_guard_enabled:
+    if not aiguard_config._ai_guard_enabled:
         return jsonify({"action": "ALLOW", "reason": "AI Guard not enabled"}), 200
 
     try:
-        from ddtrace.appsec.ai_guard import new_ai_guard_client, Options, AIGuardAbortError
+        try:
+            from ddtrace.aiguard import new_ai_guard_client, Options, AIGuardAbortError
+        except ImportError:
+            from ddtrace.appsec.ai_guard import new_ai_guard_client, Options, AIGuardAbortError
         from ddtrace.appsec.track_user_sdk import track_user_id
 
         should_block = flask_request.headers.get("X-AI-Guard-Block", "false").lower() == "true"