fix(define-slots): 类型定义错误的问题

pages/component-instance/options/options.uvue

@@ -20,7 +20,7 @@ export default {
     }
   },
   mounted () {
-    this.name = this.$options.name!
+    this.name = this.$options.name
   },
   methods: {
     // getCustomKey (): string {

pages/composition-api/basic/define-slots/Foo.uvue

@@ -10,10 +10,10 @@
   const msg = ref('foo msg')
   const num = ref<number>(0)
   const arr = ref<string[]>(['a', 'b', 'c'])
-  
+
   defineSlots<{
-    default(props : { msg : string }) : any,
-    header(props : { num : string }) : any,
+    header(props : { msg : string }) : any,
+    default(props : { num : number }) : any,
     footer(props : { arr : string[] }) : any
   }>()
 </script>
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