## Why
The `:slash_tmp` filesystem entry represents the Unix `/tmp` directory and
should not affect Windows sandbox policy decisions.
## What changed
- Ignore symbolic `SlashTmp` entries when resolving Windows filesystem access,
converting permission profiles, and intersecting requested permissions.
- Continue treating a literal `/tmp` entry as a regular filesystem path.
## Testing
Add Windows-specific coverage for policy conversion, access checks, and
permission-profile intersection.
GitOrigin-RevId: f4cdd37ea41abc9debfe8a0d3a456b70da5e534c