Fix incorrect usage of useAnimatedScrollHandler (#9063)

* Explicitly declare worklets for useAnimatedScrollHandler_FIXED.web.ts

* Delete unused web hook

* delete other platform split file, import directly

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Co-authored-by: Samuel Newman <mozzius@protonmail.com>

src/view/com/composer/Composer.tsx

@@ -32,6 +32,7 @@ import Animated, {
   runOnUI,
   scrollTo,
   useAnimatedRef,
+  useAnimatedScrollHandler,
   useAnimatedStyle,
   useDerivedValue,
   useSharedValue,
@@ -65,7 +66,6 @@ import {
   SUPPORTED_MIME_TYPES,
   type SupportedMimeTypes,
 } from '#/lib/constants'
-import {useAnimatedScrollHandler} from '#/lib/hooks/useAnimatedScrollHandler_FIXED'
 import {useAppState} from '#/lib/hooks/useAppState'
 import {useIsKeyboardVisible} from '#/lib/hooks/useIsKeyboardVisible'
 import {useNonReactiveCallback} from '#/lib/hooks/useNonReactiveCallback'