0.50.2-pl.1

Based on upstream JavaScriptKit 0.50.2 with PassiveLogic additions:

• Pointer identity mode (identityMode: "pointer") - opt-in WeakRef-based cache ensuring same Swift heap pointer returns same JS object (=== equality)
• Configuration via bridge-js.config.json - follows exposeToGlobal pattern
• Retain leak fix - balances passRetained on identity cache hits
• Identity mode benchmarks - roundtrip, pool, churn, memory profiling scenarios
• IQR outlier removal - improved benchmark statistics for all benchmarks

Usage in Package.swift:

.package(
    url: "https://github.com/PassiveLogic/JavaScriptKit",
    exact: "0.50.2-pl.1",
),