fix(radio): the checked state also triggers the change event (#3000)

* fix(radio): the checked state also triggers the change event

* test(radio): the checked state also triggers the change event

src/radio/__tests__/vitest-radio.test.jsx

@@ -145,7 +145,7 @@ describe('Radio Component', () => {
     expect(onChangeFn.mock.calls[0][0]).toBe(true);
     expect(onChangeFn.mock.calls[0][1].e.type).toBe('click');
   });
-  it('events.change: checked value is true, without allowUncheck, click radio and trigger change', async () => {
+  it('events.change: checked value is true, without allowUncheck, click radio and can not trigger change', async () => {
     const onChangeFn = vi.fn();
     const wrapper = mount({
       render() {
@@ -154,9 +154,7 @@ describe('Radio Component', () => {
     });
     wrapper.find('.t-radio__label').trigger('click');
     await wrapper.vm.$nextTick();
-    expect(onChangeFn).toHaveBeenCalled();
-    expect(onChangeFn.mock.calls[0][0]).toBe(true);
-    expect(onChangeFn.mock.calls[0][1].e.type).toBe('click');
+    expect(onChangeFn).not.toHaveBeenCalled();
   });
 
   it('events.click works fine', async () => {

src/radio/radio.tsx

@@ -95,6 +95,9 @@ export default mixins(Vue as VueConstructor<RadioParentInjectInstance>, classPre
     checkRadio(e: MouseEvent) {
       const tChecked = this.getChecked();
       const allowUncheck = this.allowUncheck || this.radioGroup?.allowUncheck;
+
+      if (tChecked && !allowUncheck) return;
+
       if (this.radioGroup) {
         const value = tChecked && allowUncheck ? undefined : this.value;
         this.radioGroup.handleRadioChange(value, { e });