Add WaitForNotificationReady for Windows CI

tests/unit/test_tray.cpp: add <cstdlib> include and a new WaitForNotificationReady helper that calls WaitForTrayReady and, on Windows running in GitHub Actions (GITHUB_ACTIONS env var), pumps the tray loop multiple times with short sleeps to stabilize notification display. Replace direct WaitForTrayReady calls in the notification test with the new helper to reduce CI flakiness.

Author: ReenigneArcher

tests/unit/test_tray.cpp

@@ -5,6 +5,7 @@
 #include <array>
 #include <atomic>
 #include <chrono>
+#include <cstdlib>
 #include <ostream>
 #include <string>
 #include <thread>
@@ -246,6 +247,18 @@ class TrayTest: public BaseTest {  // NOSONAR(cpp:S3656) - fixture members must
       std::this_thread::sleep_for(std::chrono::milliseconds(5));
     }
   }
+
+  void WaitForNotificationReady() {
+    WaitForTrayReady();
+#if defined(_WIN32)
+    if (std::getenv("GITHUB_ACTIONS") != nullptr) {
+      for (int i = 0; i < 40; i++) {
+        tray_loop(0);
+        std::this_thread::sleep_for(std::chrono::milliseconds(50));
+      }
+    }
+#endif
+  }
 };
 
 class TrayIconTest:
@@ -388,7 +401,7 @@ TEST_P(TrayNotificationIconTest, TestNotificationDisplay) {
 
   tray_update(&testTray);
 
-  WaitForTrayReady();
+  WaitForNotificationReady();
   EXPECT_TRUE(captureScreenshot(std::string("tray_notification_") + iconParam.name + "_icon"));
 
   // Clear notification