Prevent infinite redirect after processing site during onboarding flow

client/landing/stepper/declarative-flow/internals/steps-repository/processing-step/index.tsx

@@ -13,6 +13,7 @@ import {
 } from '@automattic/onboarding';
 import { useSelect } from '@wordpress/data';
 import { useI18n } from '@wordpress/react-i18n';
+import { defer } from 'lodash';
 import { useEffect, useState } from 'react';
 import DocumentHead from 'calypso/components/data/document-head';
 import { LoadingBar } from 'calypso/components/loading-bar';
@@ -135,7 +136,10 @@ const ProcessingStep: React.FC< ProcessingStepProps > = function ( props ) {
 			} );
 
 			// Default processing handler.
-			submit?.( destinationState, ProcessingResult.SUCCESS );
+			setHasActionSuccessfullyRun( false );
+
+			// By deffering the execution we give React time to update the hasActionSuccessfullyRun value and avoid multiple calls.
+			defer( () => submit?.( destinationState, ProcessingResult.SUCCESS ) );
 		}
 		// A change in submit() doesn't cause this effect to rerun.
 		// eslint-disable-next-line react-hooks/exhaustive-deps