Revert "refactor(ses): update AsyncGeneratorFunctionInstance export"

This reverts commit e4af84a.

packages/ses/src/commons.js

@@ -362,15 +362,14 @@ export const FERAL_STACK_GETTER = feralStackGetter;
 export const FERAL_STACK_SETTER = feralStackSetter;
 
 // Test for async generator function syntax support.
-// eslint-disable-next-line import/no-mutable-exports
-let AsyncGeneratorFunctionInstance;
+let AsyncGeneratorNewFunctionInstance;
 try {
   // Wrapping one in an new Function lets the `hermesc` binary file
   // parse the Metro js bundle without SyntaxError, to generate the
   // optimised Hermes bytecode bundle, when `gradlew` is called to
   // assemble the release build APK for React Native prod Android apps.
   // Delaying the error until runtime lets us customise lockdown behaviour.
-  AsyncGeneratorFunctionInstance = new FERAL_FUNCTION(
+  AsyncGeneratorNewFunctionInstance = new FERAL_FUNCTION(
     'return (async function* AsyncGeneratorFunctionInstance() {})',
   )();
 } catch (e) {
@@ -382,4 +381,4 @@ try {
     throw e;
   }
 }
-export { AsyncGeneratorFunctionInstance };
+export const AsyncGeneratorFunctionInstance = AsyncGeneratorNewFunctionInstance;