EventRuleConfigForm: Fix zero condition escalation assignment for new event rule

Author: raviks789

application/forms/EventRuleConfigForm.php

@@ -139,9 +139,15 @@ protected function assemble(): void
             ]
         );
 
-        $this->addElement('hidden', 'zero-condition-escalation');
+        $defaultEscalationPrefix = bin2hex('1');
         $ruleId = $this->config['id'];
 
+        $this->addElement(
+            'hidden',
+            'zero-condition-escalation',
+            ['value' => $ruleId === '-1' ? $defaultEscalationPrefix : null]
+        );
+
         $configFilter = new EventRuleConfigFilter($this->searchEditorUrl, $this->config['object_filter']);
         $this->registerElement($configFilter);
 
@@ -156,20 +162,14 @@ protected function assemble(): void
         );
 
         $this->registerElement($addEscalationButton);
-        $prefixesElement = $this->createElement('hidden', 'prefixes-map', ['value' => bin2hex('1')]);
+        $prefixesElement = $this->createElement('hidden', 'prefixes-map', ['value' => $defaultEscalationPrefix]);
         $this->addElement($prefixesElement);
         $this->handleAdd();
 
         $prefixesMapString = $prefixesElement->getValue();
         $prefixesMap = explode(',', $prefixesMapString);
         $escalationCount = count($prefixesMap);
         $zeroConditionEscalation = $this->getValue('zero-condition-escalation');
-
-        if ($ruleId === '-1' && $escalationCount === 1 && $zeroConditionEscalation === null) {
-            $zeroConditionEscalation = bin2hex('1');
-            $this->getElement('zero-condition-escalation')->setValue($zeroConditionEscalation);
-        }
-
         $removePosition = null;
         $removeEscalationButtons = [];