refactor (cmp: click-monitoring) fix health monitoring

[potench]

background

Fix where monitoring is expecting a string and is receiving a mouse event

test plan

yarn dev
# go to http://localhost:8080/tcf-2.0.html 
# click "Ok Go It" 
# expect no event error in console

You should no longer see this error from DPL

[benstrahan]

short and sweet