PopupMenu: Use DPI awareness of target component when creating new windows

Also updates the drop shadower so that the DPI-awareness of the shadows
matches the DPI-awareness of the shadowed component.

modules/juce_gui_basics/menus/juce_PopupMenu.cpp

@@ -2017,6 +2017,17 @@ PopupMenu::Options PopupMenu::Options::withInitiallySelectedItem (int idOfItemTo
 Component* PopupMenu::createWindow (const Options& options,
                                     ApplicationCommandManager** managerOfChosenCommand) const
 {
+   #if JUCE_WINDOWS
+    const auto scope = [&]() -> std::unique_ptr<ScopedThreadDPIAwarenessSetter>
+    {
+        if (auto* target = options.getTargetComponent())
+            if (auto* handle = target->getWindowHandle())
+                return std::make_unique<ScopedThreadDPIAwarenessSetter> (handle);
+
+        return nullptr;
+    }();
+   #endif
+
     return items.isEmpty() ? nullptr
                            : new HelperClasses::MenuWindow (*this, nullptr, options,
                                                             ! options.getTargetScreenArea().isEmpty(),

modules/juce_gui_basics/misc/juce_DropShadower.cpp

@@ -31,6 +31,17 @@ public:
 
         if (comp->isOnDesktop())
         {
+           #if JUCE_WINDOWS
+            const auto scope = [&]() -> std::unique_ptr<ScopedThreadDPIAwarenessSetter>
+            {
+                if (comp != nullptr)
+                    if (auto* handle = comp->getWindowHandle())
+                        return std::make_unique<ScopedThreadDPIAwarenessSetter> (handle);
+
+                return nullptr;
+            }();
+           #endif
+
             setSize (1, 1); // to keep the OS happy by not having zero-size windows
             addToDesktop (ComponentPeer::windowIgnoresMouseClicks
                             | ComponentPeer::windowIsTemporary