Fix race condition of matchmaker state

[Sheikah45]

No description provided.

[codecov]

Codecov Report

Merging #2932 (1a376a5) into develop (1613daa) will decrease coverage by 0.02%.
The diff coverage is 82.27%.

❗ Current head 1a376a5 differs from pull request most recent head 3748675. Consider uploading reports for the commit 3748675 to get more accurate results

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #2932      +/-   ##
=============================================
- Coverage      64.34%   64.32%   -0.02%     
+ Complexity      4912     4910       -2     
=============================================
  Files            556      556              
  Lines          20323    20329       +6     
  Branches        1100     1101       +1     
=============================================
+ Hits           13076    13077       +1     
- Misses          6614     6619       +5     
  Partials         633      633              

Impacted Files	Coverage Δ
...in/java/com/faforever/client/game/GameService.java	64.40% <75.00%> (-0.53%)	⬇️
...client/teammatchmaking/TeamMatchmakingService.java	86.80% <88.88%> (+0.19%)	⬆️
...ent/teammatchmaking/TeamMatchmakingController.java	95.13% <100.00%> (ø)
...java/com/faforever/client/util/ConcurrentUtil.java	66.66% <100.00%> (ø)

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