[Share Extension] Move away from deprecated API, implement JS side of things (#5509)

src/view/shell/Composer.ios.tsx

@@ -34,6 +34,7 @@ export function Composer({}: {winHeight: number}) {
             mention={state?.mention}
             text={state?.text}
             imageUris={state?.imageUris}
+            videoUri={state?.videoUri}
           />
         </Providers>
       </View>

src/view/shell/Composer.tsx

@@ -54,6 +54,7 @@ export function Composer({winHeight}: {winHeight: number}) {
         mention={state.mention}
         text={state.text}
         imageUris={state.imageUris}
+        videoUri={state.videoUri}
       />
     </Animated.View>
   )