Add the @IntRange annotation to requestCode to prevent invalid input

[tall-nuts]

Fix the requestCode is not valid lead to FragmentActivity java.lang.IllegalArgumentException: Can only use lower 16 bits for requestCode

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[tall-nuts]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project (if not, look below for help). Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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[samtstern]

@pengfeigao thank you! This seems like a good change.