ACQE-7906: [MFTF Test] StorefrontCheckTaxAddingValidVATIdTest

- Created entity for customer tax class and used in test.

Author: chandrakalahanchinal

app/code/Magento/Customer/Test/Mftf/Data/CustomerTaxClassData.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+-->
+
+<entities xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:noNamespaceSchemaLocation="urn:magento:mftf:DataGenerator/etc/dataProfileSchema.xsd">
+    <entity name="UkCustomerTaxClass" type="customerGroup">
+        <data key="taxClassName" unique="suffix">UkCustomer-</data>
+    </entity>
+</entities>

app/code/Magento/Customer/Test/Mftf/Test/StorefrontCheckTaxAddingValidVATIdTest.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
- /**
-  * Copyright © Magento, Inc. All rights reserved.
-  * See COPYING.txt for license details.
-  */
+/**
+ * Copyright 2018 Adobe
+ * All Rights Reserved.
+ */
 -->
 
 <tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
@@ -51,7 +51,7 @@
             <argument name="taxCode" value="SimpleTaxUKZeroRate"/>
         </actionGroup>
         <actionGroup ref="AddCustomerTaxClassActionGroup" stepKey="addCustomerTaxClass">
-            <argument name="customerTaxClassName" value="UK_zero"/>
+            <argument name="customerTaxClassName" value="{{UkCustomerTaxClass.taxClassName}}"/>
         </actionGroup>
         <click stepKey="disableDefaultProdTaxClass" selector="{{AdminTaxRulesSection.defaultCustomerTaxClass}}"/>
         <wait stepKey="waitForDisableDefaultProdTaxClass" time="2"/>
@@ -61,7 +61,7 @@
         <!--Create a Customer Group (CUSTOMERS > Customer Groups)-->
         <actionGroup ref="AdminCreateCustomerGroupActionGroup" stepKey="createCustomerGroup">
             <argument name="groupName" value="test_UK"/>
-            <argument name="taxClass" value="UK_zero"/>
+            <argument name="taxClass" value="{{UkCustomerTaxClass.taxClassName}}"/>
         </actionGroup>
 
         <!--Set Customer Create New Account Options Config-->
@@ -137,7 +137,7 @@
             <deleteData createDataKey="createCategory" stepKey="deleteCategoryFirst"/>
 
             <actionGroup ref="DeleteProductTaxClassActionGroup" stepKey="deleteFirstProductTaxClass">
-                <argument name="taxClassName" value="UK_zero"/>
+                <argument name="taxClassName" value="{{UkCustomerTaxClass.taxClassName}}"/>
             </actionGroup>
 
             <actionGroup ref="StorefrontCustomerLogoutActionGroup" stepKey="logoutCustomer" />