WifiMetrics: Add metrics when softap band preference unsatisfied

Bug: 79701630
Test: Unit tests
Test: Validated that the metric is updated when STA + AP forces the AP
to not satisfy the band preference.
(act.py -c softap_cross_onhub.config -tb dut-name -tc
WifiStaApConcurrencyTest:test_wifi_connection_5G_DFS_softap_5G)

Change-Id: Ib3131d25969a9d89f8b46f6dc788fb2a16324909
4 files changed