wifi: generate SAE+PSK mode AP scan result key based on WPA3 support

For SAE+PSK mode APs AccessPoint.getKey(scanResult) API considering SAE as
preferred security when generating comparison key, Due to this if saved
network is PSK type, WifiTracker couldn't link the AP with saved Wifi
configuration. Thus settings application keeps asking for password when user
tap on SAE mixed mode AP though the network is saved.

This commit fixes the above issue by generating SAE mixed mode scan result
comparison key based on WPA3 support. i.e If WPA3 not supported and scan
result has SAE+PSK capability consider security type as PSK while generating
comparison key.

Change-Id: Iac47c5aebf1d677e01a813e64f9658c3e608ffb4
CRs-Fixed: 2514443