Landmarks followup (#2920)
* don't check labels in production
* Log elements that violate missing label check
* Log elements that violate duplicate labels check
* fix to log element
* fix tests that check warnings
* change addLandmark to use binary search
* cleanup binary search
* add blur handler
* add test for blur and refocus landmark
* remove skip
* Fix focus lost to body
* remove environment check (not working)
Co-authored-by: Rob Snow <rsnow@adobe.com>
