Debug multi-GPU Clifford+RZ environment variable

This release fixes a bug that prevented custom tuning of the maximum ancillary qubit count in QStabilizerHybrid via QRACK_MAX_PAGING_QB. (This mostly affects cases of multi-GPU simulation with near-Clifford optimization, only.)

Full Changelog: vm6502q.v9.9.0...vm6502q.v9.9.1

sha1sum results:
2e567aab94b5f5d200417378bd5529d0351c53c2 libqrack-macosx_14_0_arm64.zip
b102c8c0d702d2629962e8a90a1affe106ba6f74 libqrack-manylinux2014_x86_64.zip
1a9ebef40c3992a7ae52905040830834e93c2080 libqrack-manylinux_2_35_x86_64.zip
8f8d209cd8785e93d1dda5497b2ba1acca69a14d libqrack-manylinux_2_39_x86_64.zip
bbe0e48501d7f79f8e9d6f8694e79c7e97cad847 libqrack-win-amd64.zip