[Wi-Fi] Should not downgrade the security to connect an OWE access point

For an OWE transition mode AccessPoint, it returns the security
the device can support. So an OWE transition mode AP should not
be affected by the bug.

For an OWE AP and a device not supports OWE, this bug may let the
device try to connect to the OWE AP with SECURITY_NONE.

Bug: 146105831
Test: atest AccessPointTest
Change-Id: I6809aed76e399db3e3c2cbebf0bd44ebdf490755