ENGCOM-2213: Fix of invalid price for integer currencies when amount less than group size #16590

 - Merge Pull Request #16590 from vkublytskyi/magento2:int-currency-format-2.2
 - Merged commits:
   1. e1db595

Author: magento-engcom-team

lib/internal/Magento/Framework/Locale/Format.php

@@ -128,7 +128,6 @@ public function getPriceFormat($localeCode = null, $currencyCode = null)
         } else {
             $group = strrpos($format, '.');
         }
-        $integerRequired = strpos($format, '.') - strpos($format, '0');
 
         $result = [
             //TODO: change interface
@@ -138,7 +137,7 @@ public function getPriceFormat($localeCode = null, $currencyCode = null)
             'decimalSymbol' => $decimalSymbol,
             'groupSymbol' => $groupSymbol,
             'groupLength' => $group,
-            'integerRequired' => $integerRequired,
+            'integerRequired' => $totalPrecision == 0,
         ];
 
         return $result;