AppState.isAvailable is a string instead of a boolean

[mozzius]

Is there an existing issue for this?

• I have searched the existing issues

Describe the issue

AppState.isAvailable should just be a boolean, as documented here:

https://necolas.github.io/react-native-web/docs/app-state/#static-properties

However, since the check does not coerce document[VISIBILITY_STATE_PROPERTY] to a boolean, it ends up being a string such as "visible"

Expected behavior

AppState.isAvailable should be a bool

Steps to reproduce

1. Log AppState.isAvailable to console
2. It should be a string instead of a bool

Test case

https://codesandbox.io/p/sandbox/interesting-dream-fq6q93

Additional comments

No response

[necolas]

Fixed by #2674