Log an error on package not found in DefaultPermissionGrantPolicy

Currently information on which package was not found is lost, e.g.
https://buganizer.corp.google.com/issues/123042772#comment9

Bug: 123042772
Test: presubmit
Change-Id: I2566364c56c1752c05047a32ee5ceb8b9ea996f8

services/core/java/com/android/server/pm/permission/DefaultPermissionGrantPolicy.java

@@ -1272,6 +1272,7 @@ public final class DefaultPermissionGrantPolicy {
             return mContext.getPackageManager().getPackageInfo(pkg,
                     DEFAULT_PACKAGE_INFO_QUERY_FLAGS | extraFlags);
         } catch (NameNotFoundException e) {
+            Slog.e(TAG, "PackageNot found: " + pkg, e);
             return null;
         }
     }