fix(e2e): add the webdriverclassic option to the atlas cloud login window remote session (#6566)

Author: gribnoysup

packages/compass-e2e-tests/helpers/compass-web-sandbox.ts

@@ -92,6 +92,7 @@ export async function spawnCompassWebSandboxAndSignInToAtlas(
           `--app=${COMPASS_WEB_SANDBOX_RUNNER_PATH}`,
         ],
       },
+      'wdio:enforceWebDriverClassic': true,
     },
     waitforTimeout,
   });