fix(VTextField): prevent pointer events on the label

1.0 had it on every 'input-group', this was removed for selection controls but forgot to add it back to text fields

Author: KaelWD

src/stylus/components/_text-fields.styl

@@ -137,6 +137,7 @@ rtl(v-text-field-rtl, "v-text-field")
     top: 6px // equal to the margin top of icons
     transform-origin: top left
     white-space: nowrap
+    pointer-events: none
 
     &--active
       max-width: 100%