chore: bump node_compat test suite to Node.js 26.3.0 (#34746)
This refreshes the vendored Node.js compatibility test suite so we
exercise Deno against a more recent set of upstream tests. The node_test
submodule is bumped from Node.js 25.8.1 to 26.3.0.
The new suite drops or renames a handful of upstream tests (for example
the removed assert.CallTracker tests and several stream deprecation-warning
tests), so 25 entries in config.jsonc that no longer have a
corresponding file are removed. They would otherwise silently never run.
The process.version bump that accompanies this Node.js release is
handled in a separate PR.
