Litellm dev bedrock anthropic 3 7 v2 (#8843)

* feat(bedrock/converse/transformation.py): support claude-3-7-sonnet reasoning_Content transformation

Closes https://github.com/BerriAI/litellm/issues/8777

* fix(bedrock/): support returning `reasoning_content` on streaming for claude-3-7

Resolves https://github.com/BerriAI/litellm/issues/8777

* feat(bedrock/): unify converse reasoning content blocks for consistency across anthropic and bedrock

* fix(anthropic/chat/transformation.py): handle deepseek-style 'reasoning_content' extraction within transformation.py

simpler logic

* feat(bedrock/): fix streaming to return blocks in consistent format

* fix: fix linting error

* test: fix test

* feat(factory.py): fix bedrock thinking block translation on tool calling

allows passing the thinking blocks back to bedrock for tool calling

* fix(types/utils.py): don't exclude provider_specific_fields on model dump

ensures consistent responses

* fix: fix linting errors

* fix(convert_dict_to_response.py): pass reasoning_content on root

* fix: test

* fix(streaming_handler.py): add helper util for setting model id

* fix(streaming_handler.py): fix setting model id on model response stream chunk

* fix(streaming_handler.py): fix linting error

* fix(streaming_handler.py): fix linting error

* fix(types/utils.py): add provider_specific_fields to model stream response

* fix(streaming_handler.py): copy provider specific fields and add them to the root of the streaming response

* fix(streaming_handler.py): fix check

* fix: fix test

* fix(types/utils.py): ensure messages content is always openai compatible

* fix(types/utils.py): fix delta object to always be openai compatible

only introduce new params if variable exists

* test: fix bedrock nova tests

* test: skip flaky test

* test: skip flaky test in ci/cd

tests/local_testing/test_function_calling.py

@@ -161,6 +161,7 @@ def test_aaparallel_function_call(model):
     "model",
     [
         "anthropic/claude-3-7-sonnet-20250219",
+        "bedrock/us.anthropic.claude-3-7-sonnet-20250219-v1:0",
     ],
 )
 @pytest.mark.flaky(retries=3, delay=1)