useBeforeUnload's message parameter not used by modern browsers

[alvaro450]

Is your feature request related to a problem? Please describe.
The useBeforeUnload hook takes two params:

1. enabled: boolean | (() => boolean) = true
2. message: A string to be displayed in the dialog

The problem is that modern browsers do NOT allow a custom message on the dialog that is shown a result of beforeUnload event, making the second parameter irrelevant.

Describe the solution you'd like
Remove the message parameter and default its value to true for legacy browsers. I understand this would be a breaking change, and less desired.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

An alternative is to just update the documentation to indicate message would only be used as a truthy value for event.returnType and its effect will only apply in legacy browsers. Modern browsers will not use the message provided to be displayed in the dialog.