Handle ImeTracker timeout in collectSourceControl

If we have fromIme=true but either no control or a control without a
leash, the IME request will fail (as the IME inset type wont be added
in typesReady), but we don't cancel the statsToken in that case.

This adds handling for this case and also logs it to surface the cause.

Bug: 317909682
Test: n/a
Change-Id: Ief2b929680cde1f81544c4e7f845a1fe39a7414c