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[react-devtools-cdt-mcp] chrome-devtools-mcp integration (#36600)

> [!NOTE]
> I had to invalidate `node_modules` cache keys on CI, because we are
now using `react-devtools-facade` package and we need to create a
symlink to it, otherwise Flow will fail. We use a hash value of
`yarn.lock`, but it's not invalidated when a package inside yarn
workspace is using another private package.

---

This change introduces new `react-devtools-cdt-mcp` package, which is
responsible for installing React tools for `chrome-devtools-mcp` server.
It is using `react-devtools-facade` as a dependency: it doesn't own the
implementation of these tools, it just relays Facade's tools to
`chrome-devtools-mcp` format.

When CDT MCP navigates to a fresh page, it emits unique
`devtoolsdiscovery` method, that has `respondWith` method, which is the
integration point between runtime libraries and MCP server.
`react-devtools-cdt-mcp` is the owner for this integration. More details
are available here -
https://github.com/ChromeDevTools/chrome-devtools-mcp/blob/main/docs/third-party-developer-tools.md.

Here is the list of tools that are being installed:
- `react_get_component_tree`
- `react_get_component_by_uid`
- `react_find_components`
- `react_get_component_source`
- `react_get_owner_stack_trace`
- `react_get_owner_stack`
- `react_start_profiling`
- `react_stop_profiling `
- `react_get_trace_overview`
- `react_get_commit_report`

--- 
Quick demo how to test the package with `chrome-devtools-mcp` CLI. Steps
are also mentioned in `README` file:


https://github.com/user-attachments/assets/af9fefce-03f0-4ebd-a94f-e9dd72b87f4d
R
Ruslan Lesiutin committed
d0d623d4c1ac02391a3bc97c8c0e8fee9cdfea2c
Parent: 3a620bb
Committed by GitHub <noreply@github.com> on 6/30/2026, 3:52:30 PM