AC-12025::DOB issue: leading zero is missing for single digit month

Author: glo71317

app/code/Magento/Customer/Block/Widget/Dob.php

@@ -23,9 +23,9 @@ class Dob extends AbstractWidget
     /**
      * Constants for borders of date-type customer attributes
      */
-    const MIN_DATE_RANGE_KEY = 'date_range_min';
+    public const MIN_DATE_RANGE_KEY = 'date_range_min';
 
-    const MAX_DATE_RANGE_KEY = 'date_range_max';
+    public const MAX_DATE_RANGE_KEY = 'date_range_max';
 
     /**
      * @var array

app/code/Magento/Customer/Test/Unit/Block/Widget/DobTest.php

@@ -52,7 +52,7 @@ class DobTest extends TestCase
     private const YEAR = '2014';
 
     // Value of date('Y', strtotime(self::DATE))
-    private const DATE_FORMAT = 'M/dd/y';
+    private const DATE_FORMAT = 'MM/dd/y';
 
     /** Constants used by Dob::setDateInput($code, $html) */
     private const DAY_HTML =