Fix flow tutorials (#6722)

* Fix tutorial basic

* fix other tutorials

* nit fix bug with button shrinking

* tutorial works backwards

* nit delete field on prev

frontend/src/lib/components/tutorials/FlowBuilderTutorialErrorHandler.svelte

@@ -51,14 +51,14 @@
 			}
 		},
 		{
-			element: '#flow-editor-error-handler',
+			element: '#flow-editor-add-step-error-handler-button',
 			popover: {
 				title: 'Error handler',
 				description:
 					'You can add an error handler to your flow. It will be executed if any of the steps in the flow fails.',
 
 				onNextClick: () => {
-					triggerPointerDown('#flow-editor-error-handler button')
+					triggerPointerDown('#flow-editor-add-step-error-handler-button')
 					setTimeout(() => {
 						driver.moveNext()
 					})