Should handle WifiConfigUiBase#dispatchSubmit() for check mark button events.
Bug: 152144169
Test: make RunSettingsRoboTests ROBOTEST_FILTER=ConfigureWifiEntryFragmentTest
make RunSettingsRoboTests ROBOTEST_FILTER=ConfigureAccessPointFragmentTest
Change-Id: I35cbc1cdd6fbef3fd51aaa8dec94722e4155b7f4