Closes#39448Closes#37866
This PR expands the env-clearing fix from #42587 to include the
SystemNodeRuntime, which covers Node.js installations managed by Mise.
When running under the system runtime, npm subcommands were still
launched with a cleared environment, preventing variables such as
MISE_DATA_DIR from reaching the shim or the mise binary itself. As a
result, Mise finds the npm binary in the default MISE_DATA_DIR,
consistent with the behavior described in
https://github.com/zed-industries/zed/issues/39448#issuecomment-3433644569.
This change ensures that environment variables are passed through for
npm subcommands when using the system Node runtime, restoring expected
behavior for Mise-managed Node installations. This also fixes cases
where envs are used by npm itself.
Release Notes:
- Enable environment passthrough for npm subcommands
b577f8a5ea