Add canAllowWhileInUsePermissionInFgsLocked() method back.

Previous automerge from rvc-dev branch has removed this method, which
causes build failure on rvc-qpr-dev branch.

Bug: 197891691
Test: build and run.
Merged-In: Idc88f274c7a323d175d65bb47eca041772ae9bb7
Change-Id: I5b39c6d79d0ebf2d73118bebf76160aca74d4f22

services/core/java/com/android/server/am/ActiveServices.java

@@ -4982,4 +4982,11 @@ public final class ActiveServices {
         }
         return false;
     }
+
+    boolean canAllowWhileInUsePermissionInFgsLocked(int callingPid, int callingUid,
+            String callingPackage) {
+        return shouldAllowWhileInUsePermissionInFgsLocked(
+                callingPackage, callingPid, callingUid, null, null, false);
+    }
+
 }