fix: update vue3.0.6 error

Author: tangjinzhou

components/vc-calendar/src/mixin/CalendarMixin.js

@@ -34,8 +34,12 @@ const CalendarMixin = {
   },
 
   data() {
-    this.onKeyDown = this.onKeyDown || noop;
-    this.onBlur = this.onBlur || noop;
+    if (this.onKeyDown === undefined) {
+      this.onKeyDown = noop;
+    }
+    if (this.onBlur === undefined) {
+      this.onBlur = noop;
+    }
     const props = this.$props;
     const sValue = props.value || props.defaultValue || getNowByCurrentStateValue();
     return {

components/vc-select/generate.tsx

@@ -925,7 +925,7 @@ export default function generateSelector<
 
         // We should give focus back to selector if clicked item is not focusable
         if (popupElement && popupElement.contains(target as HTMLElement)) {
-          const timeoutId = setTimeout(() => {
+          const timeoutId = window.setTimeout(() => {
             const index = activeTimeoutIds.indexOf(timeoutId);
             if (index !== -1) {
               activeTimeoutIds.splice(index, 1);

components/vc-steps/Steps.jsx

@@ -27,7 +27,6 @@ export default defineComponent({
     canClick: PropTypes.looseBool,
   },
   data() {
-    this.calcStepOffsetWidth = debounce(this.calcStepOffsetWidth, 150);
     return {
       flexSupported: true,
       lastStepOffsetWidth: 0,
@@ -63,7 +62,7 @@ export default defineComponent({
         this.__emit('change', next);
       }
     },
-    calcStepOffsetWidth() {
+    calcStepOffsetWidth: debounce(function() {
       if (isFlexSupported()) {
         return;
       }
@@ -87,7 +86,7 @@ export default defineComponent({
           this.setState({ lastStepOffsetWidth: offsetWidth });
         });
       }
-    },
+    }, 150),
   },
   render() {
     const {