Changed dropdown menu’s error state

Menu’s border had incorrect color.

src/definitions/collections/form.less

@@ -526,17 +526,10 @@
   color: @formErrorColor;
 }
 .ui.form .fields.error .field .ui.dropdown,
-.ui.form .field.error .ui.dropdown {
-  border-color: @formErrorBorder !important;
-}
-.ui.form .fields.error .field .ui.dropdown:hover,
-.ui.form .field.error .ui.dropdown:hover {
+.ui.form .field.error .ui.dropdown,
+.ui.form .field.error .ui.dropdown > .menu {
   border-color: @formErrorBorder !important;
 }
-.ui.form .fields.error .field .ui.dropdown:hover .menu,
-.ui.form .field.error .ui.dropdown:hover .menu {
-  border-color: @formErrorBorder;
-}
 .ui.form .fields.error .field .ui.multiple.selection.dropdown > .label,
 .ui.form .field.error .ui.multiple.selection.dropdown > .label {
   background-color: @dropdownErrorLabelBackground;