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

* Add platform vars to env

* Replace /platform/detection with /env

src/lib/browser.native.ts

@@ -1,5 +1,5 @@
 export const isSafari = false
 export const isFirefox = false
 export const isTouchDevice = true
-export const isAndroidWeb = false
+export const IS_ANDROIDWeb = false
 export const isHighDPI = true