power: type checking fix

For legacy purposes its possible that "initialize()" may be an
awaitable.   Ignore the type as it consues mypy.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

moonraker/components/power.py

@@ -191,7 +191,7 @@ class PrinterPower:
                 f"Device [{name}] already configured")
         success = device.initialize()
         if asyncio.iscoroutine(success):
-            success = await success
+            success = await success  # type: ignore
         if not success:
             self.server.add_warning(
                 f"Power device '{device.get_name()}' failed to initialize"