Reject SUITE_B_192 network creation for non EAP-TLS

Reject creation of WPA3-Enterprise 192-bit network in Settings app if
the selected EAP method is not EAP-TLS, as mandated by the
specification.

Note that this is just a protection against invalid networks, a UI
change to prevent this in Settings will follow.

Bug: 135127581
Test: atest WifiConfigControllerTest
Test: Create invalid network, verify it is not saved
Change-Id: I2978c2c71a90433778b6187a986e3284e9095d41