Avoid Favicon 404 Error in wasm-test-runner Tests

[heeckhau]

When running the WebAssembly tests with wasm-test-runner, the logs currently display an error related to a missing favicon:

2024-09-12T07:33:09.418083Z ERROR tlsn_wasm_test_runner::chrome_driver: LogEntry { source: Network, level: Error, text: "Failed to load resource: the server responded with a status of 404 (Not Found)", category: None, timestamp: Timestamp(1726126389417.842), url: Some("http://127.0.0.1:8013/favicon.ico"), line_number: None, stack_trace: None, network_request_id: Some(RequestId("26300.5")), worker_id: None, args: None }

This error occurs because the browser requests a favicon from the server, but the resource is not found, resulting in a 404 response. While the error doesn’t break the tests, it adds unnecessary noise to the logs and could be distracting.