core[patch]: introduce ToolMessage.status (#24628)

Anthropic models (including via Bedrock and other cloud platforms)
accept a status/is_error attribute on tool messages/results
(specifically in `tool_result` content blocks for Anthropic API). Adding
a ToolMessage.status attribute so that users can set this attribute when
using those models

libs/standard-tests/langchain_standard_tests/integration_tests/chat_models.py

@@ -467,6 +467,7 @@ class ChatModelIntegrationTests(ChatModelTests):
                                 "text": "green is a great pick! that's my sister's favorite color",  # noqa: E501
                             }
                         ],
+                        "is_error": False,
                     },
                     {"type": "text", "text": "what's my sister's favorite color"},
                 ]