types: using unknown instead of any (#8152)

* types: using unknown instead of any

* chore: UnknownProp

src/checkbox/Checker.tsx

@@ -1,5 +1,5 @@
 import { ref, computed, defineComponent, PropType } from 'vue';
-import { addUnit } from '../utils';
+import { addUnit, UnknownProp } from '../utils';
 import Icon from '../icon';
 
 export type CheckerShape = 'square' | 'round';
@@ -15,10 +15,10 @@ export type CheckerParent = {
 };
 
 export const checkerProps = {
-  name: null as any,
+  name: UnknownProp,
   disabled: Boolean,
   iconSize: [Number, String],
-  modelValue: null as any,
+  modelValue: UnknownProp,
   checkedColor: String,
   labelPosition: String as PropType<CheckerLabelPosition>,
   labelDisabled: Boolean,

src/checkbox/index.tsx

@@ -54,7 +54,7 @@ export default createComponent({
       if (parent && props.bindGroup) {
         return parent.props.modelValue.indexOf(props.name) !== -1;
       }
-      return props.modelValue;
+      return !!props.modelValue;
     });
 
     const toggle = (newValue = !checked.value) => {

src/checkbox/test/__snapshots__/index.spec.ts.snap

@@ -4,6 +4,7 @@ exports[`should adjust label position when using label-position prop 1`] = `
 <div role="checkbox"
      class="van-checkbox"
      tabindex="0"
+     aria-checked="false"
 >
   <span class="van-checkbox__label van-checkbox__label--left">
     Label