Fix tests broken in ag/3574286

Changes made during review process broke a test, and this was not caught
via presubmits. Fixing now.

Bug: 68030053
Test: runtest --path
              frameworks/base/packages/SettingsLib/tests/integ/src/com/android/settingslib/wifi/WifiTrackerTest.java

Change-Id: I7ce84c7cd1653966beb8980250e64a590def7fc9