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

* Add platform vars to env

* Replace /platform/detection with /env

src/ageAssurance/components/RedirectOverlay.tsx

@@ -15,8 +15,6 @@ import {useLingui} from '@lingui/react'
 import {retry} from '#/lib/async/retry'
 import {wait} from '#/lib/async/wait'
 import {parseLinkingUrl} from '#/lib/parseLinkingUrl'
-import {isWeb} from '#/platform/detection'
-import {isIOS} from '#/platform/detection'
 import {useAgent, useSession} from '#/state/session'
 import {atoms as a, platform, useBreakpoints, useTheme} from '#/alf'
 import {AgeAssuranceBadge} from '#/components/ageAssurance/AgeAssuranceBadge'
@@ -28,6 +26,8 @@ import {Loader} from '#/components/Loader'
 import {Text} from '#/components/Typography'
 import {refetchAgeAssuranceServerState} from '#/ageAssurance'
 import {logger} from '#/ageAssurance'
+import {IS_WEB} from '#/env'
+import {IS_IOS} from '#/env'
 
 export type RedirectOverlayState = {
   result: 'success' | 'unknown'
@@ -92,7 +92,7 @@ export function Provider({children}: {children?: React.ReactNode}) {
       actorDid: params.get('actorDid') ?? undefined,
     })
 
-    if (isWeb) {
+    if (IS_WEB) {
       // Clear the URL parameters so they don't re-trigger
       history.pushState(null, '', '/')
     }
@@ -145,7 +145,7 @@ export function RedirectOverlay() {
           // setting a zIndex when using FullWindowOverlay on iOS
           // means the taps pass straight through to the underlying content (???)
           // so don't set it on iOS. FullWindowOverlay already does the job.
-          !isIOS && {zIndex: 9999},
+          !IS_IOS && {zIndex: 9999},
           t.atoms.bg,
           gtMobile ? a.p_2xl : a.p_xl,
           a.align_center,