Users: Don't show 'Reset Password' link if password reset is not allowed

[ocean90]

With the ​allow_password_reset filter it's possible to disallow a password reset per user. The value of this filter is not checked when adding the 'Reset Password' link to the list table actions added in #34281. In such cases you still get a "Password reset link sent." notice but no email is actually sent.

Relevant part in core: https://core.trac.wordpress.org/browser/trunk/src/wp-admin/includes/class-wp-users-list-table.php?rev=55276&marks=502-507#L502

If the ​allow_password_reset filter is set to false, the admin panel still shows the Send Password reset, even though this does nothing. This PR adds a check to see if the filter is set to false and if it is set to false it does not show the button.

See: https://core.trac.wordpress.org/ticket/58194

[cshark]

Without this patch, the Send password reset button appears for all the users, even though the user uty has this option disabled though the allow_password_reset filter.

With the patch, the option is not displayed for that user.