fix(testing): e2e flag no longer needed, testID is now applicable in dev or prod builds (#10396)

- you can now test on development or production with testID set
- for android, this changes testID to use resource id instead of content description
- you no longer need to pass `--env.e2e`. e2e is simply usable if testID is set
- the `testID` property will also set `accessibilityIdentifier` and `accessibilityIdentifier` property will set `testID` only if there is a `testID` already set

packages/webpack5/src/index.ts

@@ -52,7 +52,6 @@ export interface IWebpackEnv {
 	// misc
 	replace?: string[] | string;
 	watchNodeModules?: boolean;
-	e2e?: boolean;
 }
 
 interface IChainEntry {