chore(mcp): regenerate uv.lock for anyio test extra

Without this, uv sync detects pyproject/lockfile drift on CI and
silently re-resolves the entire dep tree to newer versions
(uvicorn 0.41.0 → 0.46.0 was observed), which broke the e2e
playwright suite. Lock now matches pyproject so installs are
reproducible.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: galshubeli