portable service only run on main display (#8525)

Signed-off-by: 21pages <sunboeasy@gmail.com>

src/server/portable_service.rs

@@ -895,7 +895,7 @@ pub mod client {
         if portable_service_running != RUNNING.lock().unwrap().clone() {
             log::info!("portable service status mismatch");
         }
-        if portable_service_running {
+        if portable_service_running && display.is_primary() {
             log::info!("Create shared memory capturer");
             return Ok(Box::new(CapturerPortable::new(current_display)));
         } else {