fix(iOS): Respect all screen orientations on iPad (#3609)

## Description

On iPad, SDK 55 router app would remain in landscape layout when the
iPad was turned upside down. This was because `RNSScreen.mm` had the
`UIInterfaceOrientationMaskAllButUpsideDown` set for allowed screen
rotations.

## Changes

Detect when running on iPad, and change the allowed screen orientations
to `UIInterfaceOrientationMaskAll`. On non-iPad devices, behavior is
unchanged.

## Test plan

Tested on iPad simulator.

---------

Co-authored-by: Kacper Kafara <kacperkafara@gmail.com>

Author: douglowder

guides/GUIDE_FOR_LIBRARY_AUTHORS.md

@@ -180,7 +180,8 @@ Allows for the customization of the type of animation to use when this screen re
 
 Sets the current screen's available orientations and forces rotation if current orientation is not included. On iOS, if you have supported orientations set in `info.plist`, they will take precedence over this prop. Possible values:
 
-- `default` - on iOS, it resolves to [UIInterfaceOrientationMaskAllButUpsideDown](https://developer.apple.com/documentation/uikit/uiinterfaceorientationmask/uiinterfaceorientationmaskallbutupsidedown?language=objc). On Android, this lets the system decide the best orientation.
+- `default` - on iOS, it resolves to [UIInterfaceOrientationMaskAllButUpsideDown](https://developer.apple.com/documentation/uikit/uiinterfaceorientationmask/uiinterfaceorientationmaskallbutupsidedown?language=objc), with
+exception for iPad devices, where it resolves to [UIInterfaceOrientationMaskAll](https://developer.apple.com/documentation/uikit/uiinterfaceorientationmask/all?language=objc). On Android, this lets the system decide the best orientation.
 - `all`
 - `portrait`
 - `portrait_up`

ios/RNSScreen.mm

@@ -2097,6 +2097,9 @@ - (UIInterfaceOrientationMask)supportedInterfaceOrientations
   if ([vc isKindOfClass:[RNSScreen class]]) {
     return ((RNSScreen *)vc).screenView.screenOrientation;
   }
+  if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
+    return UIInterfaceOrientationMaskAll;
+  }
   return UIInterfaceOrientationMaskAllButUpsideDown;
 }
 

src/types.tsx

@@ -378,7 +378,7 @@ export interface ScreenProps extends ViewProps {
   /**
    * In which orientation should the screen appear.
    * The following values are currently supported:
-   * - "default" - resolves to "all" without "portrait_down" on iOS. On Android, this lets the system decide the best orientation.
+   * - "default" - resolves to "all" without "portrait_down" on iPhone devices, "all" on iPad devices. On Android, this lets the system decide the best orientation.
    * - "all" – all orientations are permitted
    * - "portrait" – portrait orientations are permitted
    * - "portrait_up" – right-side portrait orientation is permitted