Fix multiple logs of THEMED_ICON_APPLIED

This is due to wrongly listening to the toggle changes for setting the
themed icon. There are casese that the toggle can be set
programmatically and that will also trigger the logging which is not
expcted.

This CL only make sure it logs only when user click events.

Test: Manually tested the logs
Bug: 311704566
Flag: None
Change-Id: I67e2d3eb4bf85d69aa552837b4520bc87322bc9e