refactor: return tool description directly instead of using f-string (#8557)

* refactor: simplify build_description function to return component description directly

* fix: ensure component description returns an empty string if None

Author: ogabrielluiz

src/backend/base/langflow/base/tools/component_tool.py

@@ -38,7 +38,7 @@ def _get_input_type(input_: InputTypes):
 
 
 def build_description(component: Component) -> str:
-    return f"{component.description}"
+    return component.description or ""
 
 
 async def send_message_noop(