Improve split of zen BR logs

* Categorized TYPE_DISABLE_EFFECTS as an interception event.
* Added separate category for non-config, non-interception events (like NLS hints changed). These have been known to occasionally fire too often, clobbering the other interesting logs.

Bug: 424132939
Test: atest ZenLogTest
Flag: EXEMPT Trivial logging improvement
Change-Id: I7ce3d5a5b5068a1209d0f6f9c219cc5bd881481d