support expired password

MariaDB's disconnect_on_expired_password server option controls how expired passwords are handled for connectors without explicit password expiration support.
The Java connector may execute initialization queries after establishing a connection. With expired passwords, these queries fail since only password changes are permitted.

New option `disconnectOnExpiredPasswords`:

• When set to false, initialization query failures due to expired passwords will be ignored
• Allows connection to complete despite expired password state
• Enables subsequent password change operations to proceed