v1.20251230.0

What's Changed

• Python tests: Load standard library modules from package cache by @hoodmane in https://github.com/cloudflare/workerd/pull/5783
• Add --compat-date flag and @all-compat-flags variant to wd_test by @danlapid in https://github.com/cloudflare/workerd/pull/5773
• fix flaky tests in windows by @anonrig in https://github.com/cloudflare/workerd/pull/5791
• Fixes to the new streams adapters by @jasnell in https://github.com/cloudflare/workerd/pull/5793
• Update new streams adapters to use state machine by @jasnell in https://github.com/cloudflare/workerd/pull/5767
• 12-22-25 build cleanup by @fhanau in https://github.com/cloudflare/workerd/pull/5746
• WritableStream can't be constructed with a defined type by @anonrig in https://github.com/cloudflare/workerd/pull/5777
• Benchmark of new streams adapters by @jasnell in https://github.com/cloudflare/workerd/pull/5770
• include common folder for web-platform tests by @anonrig in https://github.com/cloudflare/workerd/pull/5792
• desiredSize should be null when the stream is erroring by @anonrig in https://github.com/cloudflare/workerd/pull/5776
• use correct this value for strategy.size by @anonrig in https://github.com/cloudflare/workerd/pull/5775
• make sure ByteLengthQueuingStrategy::size handles objects by @anonrig in https://github.com/cloudflare/workerd/pull/5778

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251229.0...v1.20251230.0