feat(GridItem): add dot prop (#4426)

src/grid-item/index.js

@@ -11,6 +11,7 @@ export default createComponent({
 
   props: {
     ...routeProps,
+    dot: Boolean,
     text: String,
     icon: String,
     info: [Number, String]
@@ -68,7 +69,10 @@ export default createComponent({
       }
 
       return [
-        this.slots('icon') || (this.icon && <Icon name={this.icon} info={this.info} class={bem('icon')} />),
+        this.slots('icon') ||
+          (this.icon && (
+            <Icon name={this.icon} dot={this.dot} info={this.info} class={bem('icon')} />
+          )),
         this.slots('text') || (this.text && <span class={bem('text')}>{this.text}</span>)
       ];
     }