fix(react-components): fix onboarding default size (#13372)

ref: 13389

Signed-off-by: Thibault Barske <[email protected]>

packages/manager-react-components/src/components/templates/onboarding/onboarding.component.tsx

@@ -108,7 +108,7 @@ export const OnboardingLayout: React.FC<OnboardingLayoutProps> = ({
       {!hideHeadingSection && (
         <section className="flex flex-col items-center mt-8">
           <img
-            className={`max-h-28 ${imgClassName ?? ''}`}
+            className={`max-h-[150px] ${imgClassName ?? ''}`}
             src={placeholderSrc}
             {...imgProps}
           />