Add feature flag for displaying trigger filters

[MAILPOET-5257]

mailpoet/assets/js/src/automation/editor/components/sidebar/step/index.tsx

@@ -3,6 +3,7 @@ import { useSelect } from '@wordpress/data';
 import { storeName } from '../../../store';
 import { FiltersPanel } from '../../filters';
 import { StepCard } from '../../step-card';
+import { MailPoet } from '../../../../../mailpoet';
 
 function StepSidebarGeneralError(): JSX.Element {
   const { errors } = useSelect(
@@ -63,7 +64,8 @@ export function StepSidebar(): JSX.Element {
         key={selectedStep.id}
       />
 
-      {selectedStep.type === 'trigger' && <FiltersPanel />}
+      {MailPoet.FeaturesController.isSupported('automation_filters') &&
+        selectedStep.type === 'trigger' && <FiltersPanel />}
     </div>
   );
 }

mailpoet/lib/Features/FeaturesController.php

@@ -7,12 +7,14 @@ use MailPoetVendor\Doctrine\DBAL\Exception\TableNotFoundException;
 class FeaturesController {
   const LANDINGPAGE_AB_TEST_DEBUGGER = 'landingpage_ab_test_debugger';
   const FEATURE_BRAND_TEMPLATES = 'brand_templates';
+  const AUTOMATION_FILTERS = 'automation_filters';
 
   // Define feature defaults in the array below in the following form:
   //   self::FEATURE_NAME_OF_FEATURE => true,
   private $defaults = [
     self::LANDINGPAGE_AB_TEST_DEBUGGER => false,
     self::FEATURE_BRAND_TEMPLATES => false,
+    self::AUTOMATION_FILTERS => false,
   ];
 
   /** @var array|null */