Fix mutex locking in WindowCount module

Ensure workspace_ accesses are properly protected by mutex after queryActiveWorkspace call

Co-authored-by: Alexays <13947260+Alexays@users.noreply.github.com>

src/modules/hyprland/windowcount.cpp

@@ -44,6 +44,8 @@ auto WindowCount::update() -> void {
   std::string formatWindowed = config_["format-windowed"].asString();
   std::string formatFullscreen = config_["format-fullscreen"].asString();
 
+  std::lock_guard<std::mutex> lg(mutex_);
+
   setClass("empty", workspace_.windows == 0);
   setClass("fullscreen", workspace_.hasfullscreen);