types(Radio): use tsx (#8129)

src/radio/index.tsx

@@ -1,7 +1,7 @@
 import { pick, createNamespace } from '../utils';
 import { useParent } from '@vant/use';
 import Checker, { checkerProps } from '../checkbox/Checker';
-import { RADIO_KEY } from '../radio-group';
+import { RADIO_KEY, RadioGroupProvide } from '../radio-group';
 
 const [createComponent, bem] = createNamespace('radio');
 
@@ -11,7 +11,7 @@ export default createComponent({
   emits: ['update:modelValue'],
 
   setup(props, { emit, slots }) {
-    const { parent } = useParent(RADIO_KEY);
+    const { parent } = useParent<RadioGroupProvide>(RADIO_KEY);
 
     const checked = () => {
       const value = parent ? parent.props.modelValue : props.modelValue;
@@ -19,8 +19,11 @@ export default createComponent({
     };
 
     const toggle = () => {
-      const emitter = parent ? parent.emit : emit;
-      emitter('update:modelValue', props.name);
+      if (parent) {
+        parent.updateModelValue(props.name);
+      } else {
+        emit('update:modelValue', props.name);
+      }
     };
 
     return () => (