Add REQUEST_NOT_SUPPORTED in case 5G RAN is not supported in the device

Test: vts
Bug: 177215423
Change-Id: I35f09c0b8e22eb9464c0ca1c11225f62d1916286
Merged-In: I35f09c0b8e22eb9464c0ca1c11225f62d1916286
(cherry picked from commit 763b144799d661ae629fa200e04ce40bb0c6c771)
1 file changed