The model Currency has been reverted to fix in other PR

Author: andrewbess

app/code/Magento/Directory/Model/Currency.php

@@ -28,11 +28,11 @@ class Currency extends \Magento\Framework\Model\AbstractModel
     /**
      * CONFIG path constants
      */
-    public const XML_PATH_CURRENCY_ALLOW = 'currency/options/allow';
+    const XML_PATH_CURRENCY_ALLOW = 'currency/options/allow';
 
-    public const XML_PATH_CURRENCY_DEFAULT = 'currency/options/default';
+    const XML_PATH_CURRENCY_DEFAULT = 'currency/options/default';
 
-    public const XML_PATH_CURRENCY_BASE = 'currency/options/base';
+    const XML_PATH_CURRENCY_BASE = 'currency/options/base';
 
     /**
      * @var Filter
@@ -488,7 +488,7 @@ private function setOptions(array $options): void
             $this->numberFormatter->setSymbol(\NumberFormatter::CURRENCY_SYMBOL, '');
         }
         if (array_key_exists('precision', $options)) {
-            $this->numberFormatter->setAttribute(\NumberFormatter::FRACTION_DIGITS, $options['precision'] ?? 0);
+            $this->numberFormatter->setAttribute(\NumberFormatter::FRACTION_DIGITS, $options['precision']);
         }
     }