v16.0.1-canary.5

Core Changes

• Upgrade React from 2bcbf254-20251020 to 6160773f-20251023: #85277

Misc Changes

• Update rust toolchain to 2025-10-27: #85409
• [test] Speed up prefetching suite: #85417

Credits

Huge thanks to @wbinnssmith and @eps1lon for helping!