[11.x] Fix support for other hashing implementations when using hashed cast

[j3j5]

On the function Hash::isHashed() added on 10.x (#47197) the function password_get_info() is hardcoded on the HashManager instead of using the driver's info() function (which, in all the 1st party drivers is a call to password_get_info() on the AbstractHasher). This hardcoded method prevents 3rd party drivers to use the hashed cast, because the call to isHashed will always return false when using any algorithm not directly supported by password_get_info().

This was actually commented by @nunomaduro here but the implementation on #47197 only moved the function call to password_get_info() to the HashManager instead of leverage the info() function from the drivers.

This PR fixes that.

cc @valorin @gdebrauwer in case you have any opinion regarding this.

[gdebrauwer]

I think this change is ok, as the info() method in the AbstractHasher still uses the password_get_info() method 👍