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

* Add platform vars to env

* Replace /platform/detection with /env

src/components/Post/Embed/ExternalEmbed/ExternalPlayer.tsx

@@ -26,7 +26,6 @@ import {
   type EmbedPlayerParams,
   getPlayerAspect,
 } from '#/lib/strings/embed-player'
-import {isNative} from '#/platform/detection'
 import {useExternalEmbedsPrefs} from '#/state/preferences'
 import {EventStopper} from '#/view/com/util/EventStopper'
 import {atoms as a, useTheme} from '#/alf'
@@ -34,6 +33,7 @@ import {useDialogControl} from '#/components/Dialog'
 import {EmbedConsentDialog} from '#/components/dialogs/EmbedConsent'
 import {Fill} from '#/components/Fill'
 import {PlayButtonIcon} from '#/components/video/PlayButtonIcon'
+import {IS_NATIVE} from '#/env'
 
 interface ShouldStartLoadRequest {
   url: string
@@ -148,7 +148,7 @@ export function ExternalPlayer({
     const {height: winHeight, width: winWidth} = windowDims
 
     // Get the proper screen height depending on what is going on
-    const realWinHeight = isNative // If it is native, we always want the larger number
+    const realWinHeight = IS_NATIVE // If it is native, we always want the larger number
       ? winHeight > winWidth
         ? winHeight
         : winWidth