fix: address review feedback on exception handling

- mcp_service.py: remove unnecessary try/except around debug log,
  use len(available_tools.tools) to match actual iteration target
- bedrock_adapter.py, aws/llm.py: add AttributeError to except tuple
  to handle None content (previously caught by bare except)

src/pipecat/adapters/services/bedrock_adapter.py

@@ -209,7 +209,7 @@ class AWSBedrockLLMAdapter(BaseLLMAdapter[AWSBedrockLLMInvocationParams]):
                     tool_result_content = [{"json": content_json}]
                 else:
                     tool_result_content = [{"text": message["content"]}]
-            except (json.JSONDecodeError, ValueError):
+            except (json.JSONDecodeError, ValueError, AttributeError):
                 tool_result_content = [{"text": message["content"]}]
 
             return {

src/pipecat/services/aws/llm.py

@@ -369,7 +369,7 @@ class AWSBedrockLLMContext(OpenAILLMContext):
                     tool_result_content = [{"json": content_json}]
                 else:
                     tool_result_content = [{"text": message["content"]}]
-            except (json.JSONDecodeError, ValueError):
+            except (json.JSONDecodeError, ValueError, AttributeError):
                 tool_result_content = [{"text": message["content"]}]
 
             return {

src/pipecat/services/mcp_service.py

@@ -296,10 +296,7 @@ class MCPClient(BaseObject):
         available_tools = await session.list_tools()
         tool_schemas: List[FunctionSchema] = []
 
-        try:
-            logger.debug(f"Found {len(available_tools)} available tools")
-        except Exception:
-            pass
+        logger.debug(f"Found {len(available_tools.tools)} available tools")
 
         for tool in available_tools.tools:
             tool_name = tool.name