fix(column-resize): Unbreak Sass build by importing duplicate styles file (#19404)

Author: kseamon

src/material-experimental/column-resize/_column-resize.scss

@@ -1,5 +1,6 @@
 @import '../../material/core/style/variables';
 @import '../../material/core/style/vendor-prefixes';
+@import '../../material/core/theming/check-duplicate-styles';
 @import '../../material/core/theming/palette';
 @import '../../material/core/theming/theming';