dillon1000/react

[trusted types][www] Add enableTrustedTypesIntegration flag back in (#26016)

## Summary

The flag was first added in #16157 and was rolled out to employees in
D17430095. #25997 removed this flag because it wasn't dynamically set to
a value in www. The www side was mistakenly removed in D41851685 due to
deprecation of a TypedJSModule but we still want to keep this flag, so
let's add it back in + add a GK on the www side to match the previous
rollout.

See D42574435 for the dynamic value change in www

## How did you test this change?

```
yarn test
yarn test --prod
```