Bug: TimeOnPoint and TimeOnPayload appear to always be 0?

Possibly related: #41

Was looking at a replay recently (dated 11/9) and saw that a player received the `Point Guard` award on Volskaya but had the `TimeOnPoint` stat recorded as 0. Similarly, saw a replay on Hanamura Temple (also from 11/9) that had completed objective phases, but all team members had `TimeOnPayload` recorded as 0.

Either these aren't the right stats to look at for these maps in `SScoreResultEvent`, or they're always 0. Would be good to have this data in there!

Start by examining how SScoreResultEvent exposes TimeOnPoint and TimeOnPayload, using the Volskaya and Hanamura Temple replay examples described in the issue. Compare the behavior with the related discussion in #41 and determine whether the decoder is reading the wrong fields or omitting available data. Done means the relevant objective-time stats are correctly available when present.

Written by the indexing model from the issue text.