fix: animate emotes when overlay is open (#5659)

src/singletons/helper/GifTimer.cpp

@@ -26,6 +26,7 @@ void GIFTimer::initialize()
 
     QObject::connect(&this->timer, &QTimer::timeout, [this] {
         if (getSettings()->animationsWhenFocused &&
+            this->openOverlayWindows_ == 0 &&
             QApplication::activeWindow() == nullptr)
         {
             return;

src/singletons/helper/GifTimer.hpp

@@ -18,9 +18,21 @@ public:
         return this->position_;
     }
 
+    void registerOpenOverlayWindow()
+    {
+        this->openOverlayWindows_++;
+    }
+
+    void unregisterOpenOverlayWindow()
+    {
+        assert(this->openOverlayWindows_ >= 1);
+        this->openOverlayWindows_--;
+    }
+
 private:
     QTimer timer;
     long unsigned position_{};
+    size_t openOverlayWindows_ = 0;
 };
 
 }  // namespace chatterino