fix: range-picker style order #3219 (#3245)

Author: zkwolf

components/date-picker/RangePicker.tsx

@@ -430,7 +430,7 @@ export default defineComponent({
         ref={this.savePicker}
         id={props.id}
         class={classNames(props.class, props.pickerClass)}
-        style={{ ...style, ...pickerStyle }}
+        style={{ ...pickerStyle, ...style }}
         tabindex={props.disabled ? -1 : 0}
         onFocus={onFocus}
         onBlur={onBlur}