⚡ Bolt: [Reduce GC allocations in active pairing spatial queries using Object Pooling]

[awest813]

💡 What: Replaced per-call allocations of anonymous CUnitEnumFunction callbacks and Rectangle instances in CAbilityAbilityBuilderActivePairing.findPairUnits with reusable, LibGDX Pool-managed callback implementations and a shared static RECYCLE_RECT.
🎯 Why: To eliminate constant GC overhead that occurs when active pairings continuously query the map to find nearby partners, while preserving complete state safety against simulation re-entrancy bugs.
📊 Impact: Prevents multiple object allocations per unit evaluation in the ability loop, helping to smooth out frame times and reduce GC stutters.
🔬 Measurement: Can be verified by running Java Flight Recorder or any memory profiler to observe reduced allocation rates for CAbilityAbilityBuilderActivePairing$X closures and Rectangle during map interactions with paired abilities. Tests successfully compiled and passed.

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PR created automatically by Jules for task 2043788448023227089 started by @awest813

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