fix tree-sitter install on node 24

[qingliaowu]

What

• Adds a pnpm patch for tree-sitter@0.25.0 so its native binding builds with C++20 instead of C++17.
• Records the patched dependency in the lockfile.
• Adds a Node 24 install CI job to cover the reported install regression.

Why

Fixes #7.

Node 24 V8 headers require C++20, but tree-sitter@0.25.0 forces C++17 in binding.gyp. That makes pnpm install fail when the native binding compiles under Node 24.

How

The pnpm patch updates the upstream package build flags for Unix, macOS/Xcode, and Windows/MSVC to C++20. The new CI job runs pnpm install --frozen-lockfile on Node 24 so the install path is checked directly.

Test Plan

• corepack pnpm install --frozen-lockfile on Node v24.10.0 without CXXFLAGS
• corepack pnpm rebuild tree-sitter on Node v24.10.0 without CXXFLAGS
• node --test packages/parser-tree-sitter/bindings/node/*_test.js
• corepack pnpm --filter @agentscript/parser test
• corepack pnpm exec prettier --check .github/workflows/ci.yml package.json pnpm-lock.yaml
• corepack pnpm --filter @agentscript/parser-tree-sitter test (local machine is missing the external tree-sitter CLI; its Node binding subtest passed)

Checklist

• My code follows the project's coding style
• I have reviewed my own diff
• I have added/updated documentation as needed
• This change does not introduce new warnings