Encounter unknown error in test

When atest on aosp_cf_x86_64_only_phone-trunk_staging-userdebug,
it said the "java.lang.NoSuchMethodError: No static method getCurrentCarrierNameForDisplay(Landroid/content/Context;)Ljava/lang/CharSequence; in class Lcom/android/settings/network/telephony/MobileNetworkUtils;"

Bug: 370884447
Bug: 370425683
Test: atest MobileNetworkUtilsTest
Flag: EXEMPT bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:dd7e4d27aed0b456ab0254ff821ff568fe335f61)
Merged-In: I76bfc4c1cabaf569d74309e9e9ad6612f5649d9b
Change-Id: I76bfc4c1cabaf569d74309e9e9ad6612f5649d9b