Fixed headless option not being passed to RemoteWebDriver constructor desired_capatibilities argument by ChromiumDriver. (#9208)

Co-authored-by: David Burns <[email protected]>

Author: Dmitri-Sintsov

py/selenium/webdriver/chromium/webdriver.py

@@ -75,6 +75,8 @@ def __init__(self, browser_name, vendor_prefix,
         if desired_capabilities:
             for key, value in desired_capabilities.items():
                 options.set_capability(key, value)
+        else:
+            desired_capabilities = options.to_capabilities()
 
         if options._ignore_local_proxy:
             _ignore_proxy = options._ignore_local_proxy