fix: fix validate methods error

Author: haoziqaq

packages/varlet-vue2-ui/src/checkbox-group/CheckboxGroup.vue

@@ -82,7 +82,7 @@ export default defineComponent({
 
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     resetWithAnimation() {

packages/varlet-vue2-ui/src/checkbox/Checkbox.vue

@@ -127,7 +127,7 @@ export default defineComponent({
 
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     validateWithTrigger(trigger) {

packages/varlet-vue2-ui/src/counter/Counter.vue

@@ -141,8 +141,9 @@ export default defineComponent({
 
     toSizeUnit,
 
+    // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     validateWithTrigger(trigger) {

packages/varlet-vue2-ui/src/input/Input.vue

@@ -179,7 +179,7 @@ export default defineComponent({
 
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     // expose

packages/varlet-vue2-ui/src/radio-group/RadioGroup.vue

@@ -47,7 +47,7 @@ export default defineComponent({
   methods: {
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     // expose

packages/varlet-vue2-ui/src/radio/Radio.vue

@@ -118,7 +118,7 @@ export default defineComponent({
 
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     // expose

packages/varlet-vue2-ui/src/rate/Rate.vue

@@ -95,8 +95,9 @@ export default defineComponent({
       onInput?.(score)
     },
 
+    // expose
     validate() {
-      this._validate(this.rules, toNumber(this.value))
+      return this._validate(this.rules, toNumber(this.value))
     },
 
     validateWithTrigger(trigger) {

packages/varlet-vue2-ui/src/select/Select.vue

@@ -214,7 +214,7 @@ export default defineComponent({
 
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     // expose

packages/varlet-vue2-ui/src/slider/Slider.vue

@@ -174,8 +174,9 @@ export default defineComponent({
   methods: {
     toNumber,
 
+    // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     validateWithTrigger() {

packages/varlet-vue2-ui/src/switch/Switch.vue

@@ -113,7 +113,7 @@ export default defineComponent({
 
     // expose
     validate() {
-      this._validate(this.rules, this.value)
+      return this._validate(this.rules, this.value)
     },
 
     toNumber,