fix redirect test and add state_file_path to integration test

Update redirect unit test to expect internal url (matching the
previous fix). Add missing state_file_path field to the integration
test VolumeServerState constructor.

seaweed-volume/src/server/handlers.rs

@@ -3901,7 +3901,7 @@ mod tests {
         assert_eq!(response.status(), StatusCode::MOVED_PERMANENTLY);
         assert_eq!(
             response.headers().get(header::LOCATION).unwrap(),
-            "https://volume.public:8080/3,01637037d6?collection=photos&proxied=true"
+            "https://volume.internal:8080/3,01637037d6?collection=photos&proxied=true"
         );
     }
 }

seaweed-volume/tests/http_integration.rs

@@ -114,6 +114,7 @@ fn test_state_with_guard(
         read_buffer_size_bytes: 1024 * 1024,
         security_file: String::new(),
         cli_white_list: vec![],
+        state_file_path: String::new(),
     });
     (state, tmp)
 }