Add pop method in ConfigList

Author: HAOCHENYE

mmengine/config/config.py

@@ -352,15 +352,16 @@ def to_dict(self):
 
 
 class ConfigList(LazyContainerMixin, list):  # type: ignore
-    ...
+
+    def pop(self, idx):
+        return self.build_lazy(super().pop(idx))
 
 
 class ConfigTuple(LazyContainerMixin, tuple):  # type: ignore
     ...
 
 
 class ConfigSet(LazyContainerMixin, set):  # type: ignore
-    ...
 
     def pop(self, idx):
         return self.build_lazy(super().pop(idx))