StatsManager log lines should be in logcat

Change the Slog.d to Slog.w and enable them, so that we can see them.
They seem to represent important failure events when people call the
public API into StatsManager.

Bug: 74997752
Test: none
Change-Id: I1c577b32358158f73453a8a3066013e0f3733d87
1 file changed