Improving Client Unknown Phase Logging During Initial Connection

[Windchild292]

This has been the cause of multiple misunderstandings, including by myself... so this should better state the situation when it comes to debugging.

[codecov]

Codecov Report

Merging #2930 (e0cf70c) into master (fdbc6e1) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #2930      +/-   ##
============================================
- Coverage     10.55%   10.54%   -0.02%     
+ Complexity     3876     3867       -9     
============================================
  Files           733      733              
  Lines        101210   101210              
  Branches      16536    16536              
============================================
- Hits          10685    10674      -11     
- Misses        89150    89152       +2     
- Partials       1375     1384       +9     

Impacted Files	Coverage Δ
MekHQ/src/mekhq/AtBGameThread.java	0.00% <0.00%> (ø)
MekHQ/src/mekhq/GameThread.java	0.00% <0.00%> (ø)
...ekhq/campaign/universe/RandomFactionGenerator.java	56.17% <0.00%> (-2.00%)	⬇️
...ekHQ/src/mekhq/campaign/market/ContractMarket.java	58.60% <0.00%> (-1.00%)	⬇️
.../mekhq/campaign/mission/enums/AtBContractType.java	12.54% <0.00%> (-0.70%)	⬇️
MekHQ/src/mekhq/campaign/universe/Faction.java	66.02% <0.00%> (-0.65%)	⬇️
MekHQ/src/mekhq/campaign/universe/Systems.java	42.23% <0.00%> (+0.79%)	⬆️

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