Don't try to update Mac address if the preference pane is hidden.

If the preference controller is marking Mac Address as hidden by the
device, don't bother updating the connectivity.

Bug: 127358664
Test: atest WifiMacAddressPreferenceControllerTest
Change-Id: Ibc3c60b358cd1573a16b020f4b1fcea492b642f5
2 files changed