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

* Add platform vars to env

* Replace /platform/detection with /env

src/geolocation/device.ts

@@ -3,7 +3,7 @@ import {Platform} from 'react-native'
 import * as Location from 'expo-location'
 import {createPermissionHook} from 'expo-modules-core'
 
-import {isNative} from '#/platform/detection'
+import {IS_NATIVE} from '#/env'
 import * as debug from '#/geolocation/debug'
 import {logger} from '#/geolocation/logger'
 import {type Geolocation} from '#/geolocation/types'
@@ -118,7 +118,7 @@ export function useSyncDeviceGeolocationOnStartup(
   const synced = useRef(false)
   const [status] = useForegroundPermissions()
   useEffect(() => {
-    if (!isNative) return
+    if (!IS_NATIVE) return
 
     async function get() {
       // no need to set this more than once per session

src/geolocation/util.ts

@@ -1,6 +1,6 @@
 import {type LocationGeocodedAddress} from 'expo-location'
 
-import {isAndroid} from '#/platform/detection'
+import {IS_ANDROID} from '#/env'
 import {logger} from '#/geolocation/logger'
 import {type Geolocation} from '#/geolocation/types'
 
@@ -81,7 +81,7 @@ export function normalizeDeviceLocation(
   /*
    * Android doesn't give us ISO 3166-2 short codes. We need these for US
    */
-  if (isAndroid) {
+  if (IS_ANDROID) {
     if (region && isoCountryCode === 'US') {
       /*
        * We need short codes for US states. If we can't remap it, just drop it