MultiServer: make !hint without further arguments only reply to the instigating player

[Berserker66]

What is this fixing or adding?

Makes it so that !hint only lists the hints to the slot that send the command, not "spamming" anyone else.
I've heard complaints about this feature a few times, so hopefully this improves things.
Also left a note that this was changed to reduce potential player confusion.

How was this tested?

Barely, please test more.

[Jarno458]

Should this is be typing.Optional[typing.Sequence[int]] = None ?

[Berserker66]

No, = None is special cased as already implying Optional

[el-u]

This special-casing has been removed and explicit Optional is now recommended instead: python/peps@0630155

Out of scope feature request removed.

[t3hf1gm3nt]

So yes I know there has been a lot of complaints about other players getting spammed when someone runs the basic !hint command
But I also know there are a fair amount of players who would still want to be able to see hints relevant to them if another player runs the !hint command
Example: One player needs a reminder about something another player hinted for, but said player is still playing their game while the hinting player is sitting in BK
It would be easier/more practical for the BK player to run the hint command so the other player can see what was hinted, rather than having the player who is still playing to stop playing to run it themselves
Note that this is not me disagreeing with this change, but rather pointing out there would be a nonzero amount of players who would still like to have the old functionality in some capacity

[t3hf1gm3nt]

I can't recall if it was implemented at the time of my last comment, but now that we have the hint tab integrated into the client, my previous concerns have been solved by that tab. So I'm good with these changes now.