Unit test fix for display-aware PowerManager API

Bug: 371607402
Bug: 237547400
Test: atest EmergencyCallDomainSelectorTest
Flag: android.companion.virtualdevice.flags.display_power_manager_apis
Change-Id: I12201bb8a78d507fd77718f4158618210a8a26eb
diff --git a/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java b/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java
index 8a83ab0..51493d3 100644
--- a/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java
+++ b/tests/src/com/android/services/telephony/domainselection/EmergencyCallDomainSelectorTest.java
@@ -127,6 +127,7 @@
 import android.testing.TestableLooper;
 import android.util.Log;
 import android.util.SparseArray;
+import android.view.Display;
 
 import androidx.test.filters.SmallTest;
 
@@ -230,6 +231,11 @@
             public Resources getResources() {
                 return mResources;
             }
+
+            @Override
+            public int getDisplayId() {
+                return Display.DEFAULT_DISPLAY;
+            }
         };
 
         if (Looper.myLooper() == null) {