fix first sheet height change not registering (#8267)

modules/bottom-sheet/ios/SheetView.swift

@@ -144,7 +144,8 @@ class SheetView: ExpoView, UISheetPresentationControllerDelegate {
   }
 
   func updateLayout() {
-    if self.prevLayoutDetentIdentifier == self.selectedDetentIdentifier,
+    // Allow updates either when identifiers match OR when prevLayoutDetentIdentifier is nil (first real content update)
+    if (self.prevLayoutDetentIdentifier == self.selectedDetentIdentifier || self.prevLayoutDetentIdentifier == nil),
        let contentHeight = self.innerView?.subviews.first?.frame.size.height {
       self.sheetVc?.updateDetents(contentHeight: self.clampHeight(contentHeight),
                                   preventExpansion: self.preventExpansion)

modules/bottom-sheet/src/BottomSheetNativeComponent.tsx

@@ -1,18 +1,21 @@
 import * as React from 'react'
 import {
   Dimensions,
-  LayoutChangeEvent,
+  type LayoutChangeEvent,
-  NativeSyntheticEvent,
+  type NativeSyntheticEvent,
   Platform,
-  StyleProp,
+  type StyleProp,
   View,
-  ViewStyle,
+  type ViewStyle,
 } from 'react-native'
 import {useSafeAreaInsets} from 'react-native-safe-area-context'
 import {requireNativeModule, requireNativeViewManager} from 'expo-modules-core'
 
 import {isIOS} from '#/platform/detection'
-import {BottomSheetState, BottomSheetViewProps} from './BottomSheet.types'
+import {
+  type BottomSheetState,
+  type BottomSheetViewProps,
+} from './BottomSheet.types'
 import {BottomSheetPortalProvider} from './BottomSheetPortal'
 import {Context as PortalContext} from './BottomSheetPortal'
 

modules/bottom-sheet/src/BottomSheetNativeComponent.web.tsx

@@ -1,4 +1,4 @@
-import {BottomSheetViewProps} from './BottomSheet.types'
+import {type BottomSheetViewProps} from './BottomSheet.types'
 
 export function BottomSheetNativeComponent(_: BottomSheetViewProps) {
   throw new Error('BottomSheetNativeComponent is not available on web')