fix: fix datepicker style bug in inline-form.

style/components/form.less

@@ -231,6 +231,10 @@ form {
     vertical-align: middle;
   }
 
+  .@{prefixCalendarClass}-picker-input {
+    width: 100%!important;
+  }
+
   .@{css-prefix}form-text {
     display: inline-block;
   }