fix(ads): Add the original IMA event to the Shaka AD_CLICKED event.
fix(ads): Add the original IMA event to the Shaka AD_CLICKED event.

Closes #3304

Change-Id: Ic75bef6a27c59f73e4665d9009867ff54e240a5a

tvoli/shaka-player,tvoli/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player