Under the hood
Self-hosted runner sessions now also confine a 'gh route dir' path for the spawned process
What
The self-hosted runner's session setup, which already confines the child process's config directory and stage-file root, now also confines a 'gh route dir' path.
Why
This restricts the spawned process's access to this additional directory, in line with the existing confinement of other session-related paths.