[Dota 2] Hero Pool detection for Captain's Draft

Related Games:
Dota 2
Issue Description:
Missing hero pool detection for Captain’s Draft game mode
Can you reproduce it (exact steps to reproduce):
Just open a lobby and host a Captain’s Draft game - no hero pool event will fire
Impact for my app: [e.g. x% of the users complained about it, it’s a show-stopper]
Recently custom leagues (like FaceIt) started preferring this game mode and I’ve received numerous complaints about it not being supported
Do you currently have a workaround?
I believe it was previously supported, a long time ago, and was broken along with Rabdom Draft/Single Draft game modes, though those were fixed by now.

Please reproduce and attach a zip package of your OW client logs
Please mention the time of the event so we can find it easily in the logs


Done and deployed in 201.1.0