Basic webdriver support to servoshell on ohos (#38386)

Adding basic webdriver support to servoshell on ohos and basic
communication between the ohos device and script.

Testing: Manual testing and tracing logs

Signed-off-by: abdelrahman1234567 <abdelrahman.hossameldin.awadalla@huawei.com>

ports/servoshell/egl/ohos.rs

@@ -345,6 +345,8 @@ extern "C" fn on_surface_created_cb(xcomponent: *mut OH_NativeXComponent, window
             while let Ok(action) = rx.recv() {
                 trace!("Wakeup message received!");
                 action.do_action(&servo);
+                // Also handle any pending WebDriver messages
+                servo.handle_webdriver_messages();
             }
 
             info!("Sender disconnected - Terminating main surface thread");