Move /platform/detection vars into /env (#9707)

* Add platform vars to env

* Replace /platform/detection with /env

src/lib/haptics.ts

@@ -2,20 +2,20 @@ import React from 'react'
 import * as Device from 'expo-device'
 import {impactAsync, ImpactFeedbackStyle} from 'expo-haptics'
 
-import {isIOS, isWeb} from '#/platform/detection'
 import {useHapticsDisabled} from '#/state/preferences/disable-haptics'
+import {IS_IOS, IS_WEB} from '#/env'
 
 export function useHaptics() {
   const isHapticsDisabled = useHapticsDisabled()
 
   return React.useCallback(
     (strength: 'Light' | 'Medium' | 'Heavy' = 'Medium') => {
-      if (isHapticsDisabled || isWeb) {
+      if (isHapticsDisabled || IS_WEB) {
         return
       }
 
       // Users said the medium impact was too strong on Android; see APP-537s
-      const style = isIOS
+      const style = IS_IOS
         ? ImpactFeedbackStyle[strength]
         : ImpactFeedbackStyle.Light
       impactAsync(style)