Fixes composer onboarding "next" button

Author: axosoft-ramint

src/webviews/apps/plus/composer/components/app.ts

@@ -1806,6 +1806,7 @@ export class ComposerApp extends LitElement {
 			},
 			onNextClick: (_el, _step) => {
 				this.advanceOnboardingStep();
+				this.onboarding?.moveNext();
 			},
 		});