Fix: specify webdriver resolution to ensure enough width so that a full line of text fits on one line of the Client.

Author: bjones1

server/tests/overall_core/mod.rs

@@ -164,6 +164,7 @@ macro_rules! harness {
             // Start the webdriver.
             let server_url = "http://localhost:4444";
             let mut caps = DesiredCapabilities::chrome();
+            caps.add_arg("--resolution=1024x768");
             caps.add_arg("--headless")?;
             // On Ubuntu CI, avoid failures, probably due to running Chrome as
             // root.