Enhance error handling in TestServeSession for interrupted reads

- Updated the error handling logic in the TestServeSession implementation to account for `std::io::ErrorKind::Interrupted`, ensuring that the session can properly retry on interrupted read operations, in addition to handling timeouts and would-block scenarios.

tests/rojo_test/serve_util.rs

@@ -216,9 +216,10 @@ impl TestServeSession {
                 }
                 Err(hyper_tungstenite::tungstenite::Error::Io(e))
                     if e.kind() == std::io::ErrorKind::WouldBlock
-                        || e.kind() == std::io::ErrorKind::TimedOut =>
+                        || e.kind() == std::io::ErrorKind::TimedOut
+                        || e.kind() == std::io::ErrorKind::Interrupted =>
                 {
-                    // No data available yet or read timed out, try again
+                    // No data available yet, read timed out, or interrupted by signal - try again
                     continue;
                 }
                 Err(e) => {