chore: refactor medium detent iOS implementation (#1699)

## Description

Earlier when calling `updatePresentationStyle` in `RNSScreen` we have
relied on order of method calls and kept our fingers crossed that the
order would not be violated with future changes.

Now we leverage `finalizeUpdates:` method from
`RCTComponentViewProtocol` which is called after all updates are applied
to the component.

For broader context see #1649 (comments).

## Changes

Moved call to `updatePresentationStyle` from `updateProps` to
`finalizeUpdates`.


## Test code and steps to reproduce

See `Test1649` (everything should work as before)

## Checklist

- [x] Ensured that CI passes (iOS e2e is a known issue)

ios/RNSScreen.mm

@@ -693,11 +693,6 @@ - (void)updateProps:(facebook::react::Props::Shared const &)props
     [self setStackPresentation:newStackPresentation];
   }
 
-#if !TARGET_OS_TV
-  // This must be called after setter for stackPresentation
-  [self updatePresentationStyle];
-#endif // !TARGET_OS_TV
-
   if (newScreenProps.stackAnimation != oldScreenProps.stackAnimation) {
     [self setStackAnimation:[RNSConvert RNSScreenStackAnimationFromCppEquivalent:newScreenProps.stackAnimation]];
   }
@@ -733,6 +728,13 @@ - (void)updateLayoutMetrics:(const facebook::react::LayoutMetrics &)layoutMetric
   // Explanation taken from `reactSetFrame`, which is old arch equivalent of this code.
 }
 
+- (void)finalizeUpdates:(RNComponentViewUpdateMask)updateMask
+{
+#if !TARGET_OS_TV
+  [self updatePresentationStyle];
+#endif // !TARGET_OS_TV
+}
+
 #pragma mark - Paper specific
 #else