Centralize retained control capture release

src/node_slider.cpp

@@ -1,5 +1,6 @@
 #include "pch.h"
 #include "log.h"
+#include "legacy_ui_overlay_services.h"
 #include "node_slider.h"
 #include "shader.h"
 
@@ -91,7 +92,7 @@ kEventResult NodeSliderH::handle_event(Event* e)
         }
         break;
     case kEventType::MouseUpL:
-        mouse_release();
+        pp::panopainter::release_legacy_mouse_capture(*this);
         if (dragging && on_value_final)
             on_value_final(this, m_value);
         dragging = false;
@@ -109,7 +110,7 @@ kEventResult NodeSliderH::handle_event(Event* e)
         }
         break;
     case kEventType::MouseCancel:
-        mouse_release();
+        pp::panopainter::release_legacy_mouse_capture(*this);
         if (dragging)
         {
             m_value = m_old_value;