Fixed AyncJob support for GetLobbyListCallback

[Benjamin-Dobell]

Closes #824

[JustArchi]

[codecov]

Codecov Report

Merging #825 into master will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #825      +/-   ##
==========================================
- Coverage   22.77%   22.77%   -0.01%     
==========================================
  Files          95       95              
  Lines        9329     9331       +2     
  Branches      772      772              
==========================================
  Hits         2125     2125              
- Misses       7070     7072       +2     
  Partials      134      134              

Impacted Files	Coverage Δ
...mKit2/Steam/Handlers/SteamMatchmaking/Callbacks.cs	0.00% <0.00%> (ø)
...team/Handlers/SteamMatchmaking/SteamMatchmaking.cs	3.76% <0.00%> (-0.01%)	⬇️

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[Tyaap]

Thank you for fixing this. :)