fix(asm/lambda): add forgotten path parameters (#13707)

## Description
This is a followup on #13638, to add the forgotten waf address:
`request_path_parameters`.


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Author: florentinl

ddtrace/appsec/_handlers.py

@@ -96,6 +96,7 @@ def _on_lambda_start_request(
     route: str,
     method: str,
     parsed_query: Dict[str, Any],
+    request_path_parameters: Optional[Dict[str, Any]],
 ):
     if not (asm_config._asm_enabled and span.span_type in asm_config._asm_http_span_types):
         return
@@ -113,7 +114,7 @@ def _on_lambda_start_request(
         headers,
         request_cookies,
         parsed_query,
-        None,
+        request_path_parameters,
         request_body,
         None,
         None,