STCOM-1110: Add correct validation of data (#1998)

* STCOM-1110: Add correct validation of data

* STCOM-1110: Remove the useless comment

* STCOM-1110: Added changelog

CHANGELOG.md

@@ -11,6 +11,7 @@
 * Fix Convert24hr function of timepicker to fix 'invalid date' message when timedropdown is used. Refs STCOM-1120.
 * Fix MCL Columnheaders' focus styling. Refs STCOM-1105.
 * Fix keyboard interaction with MCL Columnheaders - Enter and Spacebar can now be used to 'click' them. Refs STCOM-680.
+* The Datepicker works correctly with an invalid date. Refs STCOM-1110.
 * Implement timeZone support in `<Timepicker/>` default output formatter. Refs STCOM-1128.
 
 ## [11.0.0](https://github.com/folio-org/stripes-components/tree/v11.0.0) (2023-01-30)

lib/Datepicker/Datepicker.js

@@ -259,9 +259,10 @@ const Datepicker = (
         return dates;
       }
       return {};
-    } else if (value !== datePair.dateString) { // if the date's not valid, we just update the datestring...
+    } else if (value !== datePair.dateString) {
       dates = {
         dateString: value,
+        formatted: ''
       };
       updateDatePair(current => {
         const newDatePair = Object.assign(current, dates);