Seperate test steps for positive and negative cases (#5773)

fix php style

use the correct step

fix other steps

fix other php style

remove unwanted param

Refactor test function for handeling errors

fix return types

clean up code

address reviews

tests/acceptance/features/bootstrap/FeatureContext.php

@@ -4600,7 +4600,7 @@ class FeatureContext extends BehatVariablesContext {
 	 * @return string
 	 * @throws Exception|GuzzleException
 	 */
-	public function getGroupIdByGroupName(string $groupName): string {
+	public function getGroupIdByGroupName(string $groupName):string {
 		$response = GraphHelper::getGroup(
 			$this->getBaseUrl(),
 			$this->getStepLineRef(),