use ios live text interaction in alt text modal and image viewer (#2752)

src/view/com/lightbox/ImageViewing/components/ImageItem/ImageItem.ios.tsx

@@ -144,6 +144,7 @@ const ImageItem = ({imageSrc, onTap, onZoom, onRequestClose}: Props) => {
           accessibilityLabel={imageSrc.alt}
           accessibilityHint=""
           onLoad={() => setLoaded(true)}
+          enableLiveTextInteraction={!scaled}
         />
       </Animated.ScrollView>
     </GestureDetector>

src/view/com/modals/AltImage.tsx

@@ -105,6 +105,7 @@ export function Component({image}: Props) {
             contentFit="contain"
             accessible={true}
             accessibilityIgnoresInvertColors
+            enableLiveTextInteraction
           />
         </View>
         <TextInput