fix(copilot): update fix_orchestrator_blocks docstring to list all 6 defaults

The docstring only listed 4 defaults but _SDM_DEFAULTS has 6 entries
including execution_mode and model. Updated to reflect the actual behavior.

autogpt_platform/backend/backend/copilot/tools/agent_generator/fixer.py

@@ -1654,6 +1654,8 @@ class AgentFixer:
         2. ``conversation_compaction`` defaults to ``True``
         3. ``retry`` defaults to ``3``
         4. ``multiple_tool_calls`` defaults to ``False``
+        5. ``execution_mode`` defaults to ``"extended_thinking"``
+        6. ``model`` defaults to ``"claude-opus-4-6"``
 
         Args:
             agent: The agent dictionary to fix