Add children to AppRouterPageRouteOpts to support Layout usage

[perenstrom]

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

📋 Changes

• Added children as an accepted parameter to withPageAuthRequired, which is necessary for usage in Layout files.

📎 References

#1643

🎯 Testing

Wrap a Layout file in withPageAuthRequired and add the parameters { children }: { children?: React.ReactNode } to the Layout function.

[perenstrom]

This apparently breaks the build for some reason I can't figure out at the moment for Pages, since they're not allowed to have children. Closing this until I (hopefully) find out why so I can let people who actually know what they're doing fix this problem. 😅

[dopry]

@perenstrom it's okay to have multiple PRs for the same thing I think if you wanted to re-open. Maybe some other developers would help you out if you were specific about what is breaking for Pages? When you say Pages do you mean the Page Router or page.tsx?