Sync upstream/common-v8 (new commits)

[miccy]

Tracking issue for merging 15 upstream commits from common-v8 to sync/merge-upstream-03-02-26.

Commits include Refactoring Console, AsyncDisposableStack rename, Browser Task runner implementation, and more.

Plan:

1. Merge upstream/common-v8
2. Resolve conflicts (Task.ts, pnpm-lock -> bun.lockb)
3. Implement browser specific createRunner
4. Verify using bun verify