[GAMEPLAY] Zilean bombs don't explode on Sion deaths.

Description: When a unit with one of Zilean's time bombs placed on it dies, the bomb will generally immediately explode. In some situations related to champion/item specific death effects, the bomb will simply continue to tick down. However, when Sion dies (either his real life or his passive-activated unlife), the bomb disappears. It does not do damage or continue to tick down. Issue found and reproduced in NA region.

Expected Result: When a living Sion dies, I'd probably expect the timer to keep counting down, but as a Zilean player I wouldn't complain if the bomb exploded. When a reanimated Sion dies, the bomb should definitely immediately explode.

Repro rate: 10/10

Video: https://vimeo.com/110116588 Apparently Google recently added a "we won't let you sign in if you don't have cookies enabled" rule, so... no Youtube for you :/ I haven't used Vimeo before, so hopefully the video is available once it's done "converting". But the repro rate's super high, so it should be easy to see for yourself if the link is bad.