Merge pull request #5482 from IgniteUI/fix-#5243-8.1.x

fix(checkbox): ripple is not positioned correctly

Author: kdinev

projects/igniteui-angular/src/lib/core/styles/components/checkbox/_checkbox-theme.scss

@@ -121,6 +121,7 @@
     }
 
     %cbx-composite-wrapper {
+        position: relative;
         width: $size;
         height: $size;
     }