Sandbox: allow access to stats/bridge-stats

Fix for 12041; bugfix on 0.2.5.1-alpha.
Fix a sentence that I never
Oops; permit rename with the correct filename
sandbox: Permit access to stats/dirreq-stats

This prevents a crash when rotating logs with dirreq-stats enabled

fixes 12035; bugfix on 0.2.5.1-alpha.