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

* Add platform vars to env

* Replace /platform/detection with /env

src/components/Select/index.tsx

@@ -82,7 +82,7 @@ export function Trigger({children, label}: TriggerProps) {
 
   if (typeof children === 'function') {
     return children({
-      isNative: true,
+      IS_NATIVE: true,
       control,
       state: {
         hovered: false,

src/components/Select/index.web.tsx

@@ -68,7 +68,7 @@ export function Trigger({children, label}: TriggerProps) {
         <RadixTriggerPassThrough>
           {props =>
             children({
-              isNative: false,
+              IS_NATIVE: false,
               state: {
                 hovered,
                 focused,

src/components/Select/types.ts

@@ -65,7 +65,7 @@ export type TriggerProps = {
 
 export type TriggerChildProps =
   | {
-      isNative: true
+      IS_NATIVE: true
       control: DialogControlProps
       state: {
         /**
@@ -92,7 +92,7 @@ export type TriggerChildProps =
       }
     }
   | {
-      isNative: false
+      IS_NATIVE: false
       state: {
         hovered: boolean
         focused: boolean