fix(NumberKeyboard): eliminate tap delay on safari (#6667)

* fix(NumberKeyboard): eliminate click delay on safari

* chore: upd comment

src/image-preview/ImagePreviewItem.js

@@ -193,6 +193,7 @@ export default {
         }
       }
 
+      // eliminate tap delay on safari
       preventDefault(event, stopPropagation);
 
       this.checkTap();

src/number-keyboard/Key.js

@@ -45,8 +45,10 @@ export default createComponent({
       }
     },
 
-    onTouchEnd() {
+    onTouchEnd(event) {
       if (this.active) {
+        // eliminate tap delay on safari
+        event.preventDefault();
         this.active = false;
         this.$emit('press', this.text, this.type);
       }