Wire VirtualPoolHandle stats from Rust via single FFM call#5

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Bukhtawar wants to merge 3 commits into

rayshrey:writer-memory-poolfrom

Bukhtawar:virtual-pool-stats

Commits on May 25, 2026

Introduce memory pool on write/merge side
rayshrey
committed
Add VirtualPoolHandle for centralized Rust memory stats in ArrowNativeAllocator
Bukhtawar
committed
Wire VirtualPoolHandle stats from Rust to Java via single FFM call
Bukhtawar
committed