Fix testRegisterUsageCallback

noteOp (introduced in go/ag/3897834) checks that the calling uid matches
the calling package, which is not correct when using a fake calling
package. Use the real package of the test so permissions are checked
properly.

The test currently only fails this way in pi-dev as noteOp is only used
in pi-dev.
Change-Id: I9ac3717af9335ba9efa0b8842a2df0d7b69ec9ab
Test: Fixed test now passes in pi-dev
Bug: b/78487385

tests/net/java/com/android/server/net/NetworkStatsServiceTest.java

@@ -963,7 +963,6 @@ public class NetworkStatsServiceTest {
 
         // verify service has empty history for wifi
         assertNetworkTotal(sTemplateWifi, 0L, 0L, 0L, 0L, 0);
-        String callingPackage = "the.calling.package";
         long thresholdInBytes = 1L;  // very small; should be overriden by framework
         DataUsageRequest inputRequest = new DataUsageRequest(
                 DataUsageRequest.REQUEST_ID_UNSET, sTemplateWifi, thresholdInBytes);
@@ -983,7 +982,7 @@ public class NetworkStatsServiceTest {
 
         // Register and verify request and that binder was called
         DataUsageRequest request =
-                mService.registerUsageCallback(callingPackage, inputRequest,
+                mService.registerUsageCallback(mServiceContext.getOpPackageName(), inputRequest,
                         messenger, mBinder);
         assertTrue(request.requestId > 0);
         assertTrue(Objects.equals(sTemplateWifi, request.template));