Simplistic fixes for 11.2.7, should restore full functionality

[zaphon]

No description provided.

[Zwixx]

This duplicates Messages if you use multiple Chat Tabs.

[zaphon]

I'll investigate later, but I don't see how anything I changed would have caused that.

[Zwixx]

In my solution #5 it's working. You need a dedupe Check. Because of all Chat Windows triggers that event.

[zaphon]

I'm still not sure why that's necessary (I'm not seeing duplication), but I will dig further. Thanks.

[tmg-pub]

Thanks for the contributions. I have not had much time for the RP scene lately so I don't know what's broken. Could you please describe what bugs have been identified and resolved with this PR? Thanks.

[zaphon]

It was a much simpler (I prefer minimal) fix than Zwixx's that you already accepted. He did merge in some of my changes to his as well. Though he also left out one piece of it (the change in keywords.lua I made). I will have to test his change to see how the piece he left out works, my guess is he has another addon that's providing a stub for the old method (I purposely avoid doing that).

[zaphon]

I figured out why my second change in keywords.lua isn't needed (YET), it's because there is a stub for ChatFrame_AddMessageEventFilter in the Blizzard Deprecated addon.

./Interface/AddOns/Blizzard_DeprecatedChatInfo/Deprecated_ChatFrame.lua:ChatFrame_AddMessageEventFilter = ChatFrameUtil.AddMessageEventFilter;