fix: datepicker header error #2488

Author: tangjinzhou

components/vc-calendar/src/calendar/CalendarHeader.jsx

@@ -174,7 +174,7 @@ const CalendarHeader = {
       panel = (
         <YearPanel
           locale={locale}
-          defaultValue={value}
+          value={value}
           rootPrefixCls={prefixCls}
           onSelect={this.onYearSelect}
           onDecadePanelShow={this.showDecadePanel}
@@ -186,7 +186,7 @@ const CalendarHeader = {
       panel = (
         <DecadePanel
           locale={locale}
-          defaultValue={value}
+          value={value}
           rootPrefixCls={prefixCls}
           onSelect={this.onDecadeSelect}
           renderFooter={renderFooter}

components/vc-calendar/src/decade/DecadePanel.jsx

@@ -35,7 +35,11 @@ export default {
       sValue: this.value || this.defaultValue,
     };
   },
-
+  watch: {
+    value(val) {
+      this.sValue = val;
+    },
+  },
   render() {
     const value = this.sValue;
     const { locale, renderFooter } = this.$props;

components/vc-calendar/src/year/YearPanel.jsx

@@ -36,6 +36,11 @@ export default {
       sValue: this.value || this.defaultValue,
     };
   },
+  watch: {
+    value(val) {
+      this.sValue = val;
+    },
+  },
   methods: {
     years() {
       const value = this.sValue;