[Transition Tracing] Moved Transition Tracing Callback Code From Mutation to Passive Phase

[lunaruan]

This PR moves the code for transition tracing in the mutation phase that adds transitions to the pending callbacks object (to be called sometime later after paint) from the mutation to the passive phase.

Things to think about:

1. Passive effects can be flushed before or after paint. How do we make sure that we get the correct end time for the interaction?