Use ternary for narrow settings header state

Author: priscilawebdev

static/app/views/settings/components/settingsPageHeader.tsx

@@ -53,7 +53,7 @@ function UnstyledSettingsPageHeader({
   // If Header is narrow, use align-items to center <Action>.
   // Otherwise, use a fixed margin to prevent an odd alignment.
   // This is needed as Actions could be a button or a dropdown.
-  const isNarrow = !hasSubtitle;
+  const isNarrow = hasSubtitle ? false : true;
   const breadcrumbTitle =
     hasPageFrame && typeof title === 'string' ? (
       <BreadcrumbTitle routes={routes} title={title} />