Fixes#4472 — MCP tools (and any tool with args_schema) produced JSON
schemas incompatible with Gemini and Bedrock/Anthropic because
extract_tool_info() called generate_model_description() which applies
OpenAI-specific transformations (additionalProperties: false, forcing
all properties required, title fields).
Added generate_tool_parameters_schema() that produces clean schemas
without those provider-specific metadata fields. Updated
extract_tool_info() to use it for the args_schema path.
Co-Authored-By: João <joao@crewai.com>
8f86634e43