368 turn off direct chat for spectators

[NikkoJT]

See #368

[SamLex]

Looks good to me.

As an aside, I don't think this will work for slotted Spectators since I don't believe fn_activateSpectator is run for them. But this probably isn't an issue as these slots are rarely used.

[NikkoJT]

This fix currently persists into "real life" if the spectator reslots. I (or you) need to find a way to get around that before this can go ahead.

[SamLex]

I think the neatest, least impact way of doing this would be adding the postInit attribute to the terminateSpectator function. I think that'll execute it when a player JIPs.

It should be fine to run this in normal start and JIP scenarios; making sure directChat is enabled is whatever and terminating the spectator should be a no-op if it's not running. But this covers the JIP'ing spectator case as it re-enables directChat and makes sure the spectator is terminated (which we haven't seen issues with but you never know)

[NikkoJT]

That seems like a good avenue to explore but we need to make sure it accounts for people using the actual spectator slots.

[NikkoJT]

A fix for this was added in #360 - the radio system now turns on direct chat for non-spectator units as part of its initialisation