Fix out-of-bounds iOS/Android emulators in examples

[NickGerleman]

Some of the examples on the React Native documentation are missing part of their content when viewed on Android/iOS.

https://reactnative.dev/docs/image-style-props

This is because the website sets a fixed height for the player, and the rendering of the device we were showing has changed.

react-native-website/website/src/css/customTheme.scss

Line 1717 in d678058

height: 544px;

@byCedric did great work in #3724 to allow the React Native website to customize the frame the emulator is shown in. We should leverage that, and change our styling + embed to a new value which avoids being cut off.

[spencerlwahlstrom]

Hello, I attempted to fix this issue with #3753 by adjusting the height, tested this on multiple pages of the site.