perf: add truthProp util (#8522)

* perf: add TruthyProp util

* chore: rename

* chore: upd

src/tag/Tag.tsx

@@ -1,5 +1,5 @@
 import { CSSProperties, PropType, Transition, defineComponent } from 'vue';
-import { createNamespace } from '../utils';
+import { truthProp, createNamespace } from '../utils';
 import { Icon } from '../icon';
 
 const [name, bem] = createNamespace('tag');
@@ -12,6 +12,7 @@ export default defineComponent({
   props: {
     size: String,
     mark: Boolean,
+    show: truthProp,
     color: String,
     plain: Boolean,
     round: Boolean,
@@ -21,10 +22,6 @@ export default defineComponent({
       type: String as PropType<TagType>,
       default: 'default',
     },
-    show: {
-      type: Boolean,
-      default: true,
-    },
   },
 
   emits: ['close'],