(core) For grist_sid*_status cookie, remember to set the path

Test Plan: Only tested manually that path is included.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D3056

app/server/lib/Authorizer.ts

@@ -529,6 +529,7 @@ export function signInStatusMiddleware(req: Request, resp: Response, next: NextF
         httpOnly: false,    // make available to client-side scripts
         expires,
         domain: getCookieDomain(req),
+        path: '/',
         sameSite: 'lax',    // same setting as for grist-sid is fine here.
       }));
     }