ENGCOM-4146: Fixed #17861 Customer Name Prefix shows white space when…

… extra separator is addes #20896

 - Merge Pull Request #20896 from opencommerce/magento2:2.3-developPR17861
 - Merged commits:
   1. 8ff4aa5

app/code/Magento/Customer/Model/Options.php

@@ -91,7 +91,7 @@ private function prepareNamePrefixSuffixOptions($options, $isOptional = false)
             return false;
         }
         $result = [];
-        $options = explode(';', $options);
+        $options = array_filter(explode(';', $options));
         foreach ($options as $value) {
             $value = $this->escaper->escapeHtml(trim($value));
             $result[$value] = $value;