Xai, VertexAI, Google AI Studio - live web search support in OpenAI format (#11251)

* build(model_prices_and_context_window.json): fix 'supports_web_search' flag - openai only supports it on 2 models - gpt-4o-search-preview and gpt-4o-mini-search-preview

* feat(xai/chat): add xai web search options param support

* test: add max tokens to test

xai output very verbose

* build(xai/): add web search support for all xai models

* build(model_prices_and_cost.json): add gemini-2.0 supports web search

* feat(gemini/): map openai 'web_search_options' to google's 'googlesearch' tool

* build(model_prices_and_context_window.json): add supports_web_search for vertex_ai/gemini-2 models

* fix: fix circular reference error

* fix(convert_dict_to_response.py): handle scenario where xai returns finish reason as 'stop' for tool calls

* fix: reduce function size

* fix: import session handling

* Revert "fix: import session handling"

This reverts commit deb257dc10.

* fix: linting pin mypy

* [Feat]: Guardrails - Add streaming for bedrock post guard (#11247)

* feat: add streaming for bedrock post guard

* fix: bedrock guardrails

* fix: add clear comments

* Update litellm/proxy/guardrails/guardrail_hooks/bedrock_guardrails.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update litellm/proxy/guardrails/guardrail_hooks/bedrock_guardrails.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix: clean up bedrock guardrails

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* [Fix] Responses API - Session management  (#11254)

* fix: import session handling

* fix: imports for session handler

* tests: tests for session handler

* Update enterprise/litellm_enterprise/enterprise_callbacks/session_handler.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* bump: bump litellm enterprise

* fixes: test_create_user_default_budget

* fix(xai/): filter 'strict' on tool call

* test: update test for new error string

* fix(utils.py): default to None if not set in  model cost map

ensures consistent usage of 'supports_[x]' flags

* fix(fireworks_ai/): support fireworks ai document inlining on pdf's sent via openai 'file' message type

* test: update test

* test: name filter_value_from_dict

* fix(fireworks_ai/): handle cache control flag in messages

* fix(xai/chat): fix check

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Co-authored-by: Ishaan Jaff <ishaanjaffer0324@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

tests/code_coverage_tests/recursive_detector.py

@@ -21,7 +21,8 @@ IGNORE_FUNCTIONS = [
     "set_schema_property_ordering", # testing added for infinite recursion
     "process_items", # testing added for infinite recursion + max depth set.
     "_can_object_call_model", # max depth set.
-    "encode_unserializable_types" # max depth set.
+    "encode_unserializable_types", # max depth set.
+    "filter_value_from_dict", # max depth set.
 ]