Fix the `killTeam` bool in bz_AllowCTFCaptureEventData_V1

[allejo]

Tanks exploding on flag capture happens client-side meaning we can't make use of the killTeam boolean in the bz_AllowCTFCaptureEventData_V1.

Telling tanks to explode should be dictated by the server, in my opinion. This will allow us to enable the killTeam option from the API as well.