fix(VListItem): only apply user-select style when using a link

fixes #8648

Author: johnleider

packages/vuetify/src/components/VList/VListItem.sass

@@ -33,7 +33,6 @@
   padding: 0 16px
   position: relative
   text-decoration: none
-  user-select: none
 
   &--disabled
     pointer-events: none
@@ -195,6 +194,7 @@
 
 .v-list-item--link
   cursor: pointer
+  user-select: none
 
   &:before
     background-color: currentColor