Add Manual test for [iOS] FlyoutPage Shadow works incorrectly on iOS

[PureWeen]

Description

Add manual test for https://github.com/dotnet/maui/pull/22351

[github-actions[bot]]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

Open similar issues:

• FlyoutPage Shadow works incorrectly on iOS (#22169), similarity score: 0.76

Closed similar issues:

• ios flyout page (#22174), similarity score: 0.76

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[jsuarezruiz]

Sent PR to add the manual test.