Revert "Simplify new equipment list. (#1264)"

[phulin]

I misread the profiling results. After running mafia this morning, I noticed it seems to have made things much worse. After looking more closely, I realized I had missed impact on the AWT event queue thread.

I need to spend some more time with this code to see if there's an actually working way to improve performance. For now, I suggest reverting my change from yesterday.

This reverts commit 6e1b0cf.

[codecov]

Codecov Report

Merging #1270 (b4224d6) into main (a3eb525) will increase coverage by 0.30%.
The diff coverage is 100.00%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1270      +/-   ##
============================================
+ Coverage     32.20%   32.51%   +0.30%     
- Complexity    15914    16071     +157     
============================================
  Files          1042     1042              
  Lines        162364   162365       +1     
  Branches      35257    35257              
============================================
+ Hits          52289    52792     +503     
+ Misses       100888   100288     -600     
- Partials       9187     9285      +98     

Impacted Files	Coverage Δ
...eforge/kolmafia/swingui/panel/GearChangePanel.java	58.87% <100.00%> (+0.19%)	⬆️
...lmafia/swingui/widget/ListCellRendererFactory.java	28.00% <0.00%> (-0.48%)	⬇️
src/net/sourceforge/kolmafia/KoLmafiaCLI.java	69.86% <0.00%> (+0.15%)	⬆️
src/net/sourceforge/kolmafia/StaticEntity.java	22.06% <0.00%> (+0.27%)	⬆️
...et/sourceforge/kolmafia/textui/RuntimeLibrary.java	36.02% <0.00%> (+0.30%)	⬆️
src/net/sourceforge/kolmafia/RequestLogger.java	28.67% <0.00%> (+0.41%)	⬆️
...sourceforge/kolmafia/persistence/TCRSDatabase.java	54.62% <0.00%> (+0.43%)	⬆️
...net/sourceforge/kolmafia/textui/DataFileCache.java	43.39% <0.00%> (+0.94%)	⬆️
...forge/kolmafia/textui/langserver/FilesMonitor.java	80.76% <0.00%> (+1.28%)	⬆️
... and 15 more

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