Made StandardMultilayerPBR hide a layer's property groups when that layer is disabled.

ATOM-14688 Disable Individual Layers

- Added new SetMaterialPropertyGroupVisibility functions to the material functors.
- Updated the MaterialFunctor::EditorContext to include parameters for handling material property group metadata.
- Updated the material inspector(s) to apply the property group visiblity changes from the material functor, to hide or show the property groups.
- Moved some code from MaterialPropertyDescriptor.h/cpp to a new MaterialDynamicMetadata.h/cpp, since these aren't really related to the MaterialPropertyDescriptor code. It's more for material functors to use.
- Also fixed the casing for the "GetMaterialPropertyValue_Image" lua function, since I was already in this code (ATOM-14793 "Fix Inconsistent Casing For LuaMaterialFunctorRuntimeContext")

Tested in MaterialEditor and in in the main Editor's MaterialComponent property override inspector.

Gems/Atom/Tools/MaterialEditor/Code/Include/Atom/Document/MaterialDocumentNotificationBus.h

@@ -18,6 +18,7 @@
 #include <AzCore/std/any.h>
 
 #include <AtomToolsFramework/DynamicProperty/DynamicProperty.h>
+#include <AtomToolsFramework/DynamicProperty/DynamicPropertyGroup.h>
 
 namespace MaterialEditor
 {
@@ -77,6 +78,12 @@ namespace MaterialEditor
         //! @param documentId unique id of material document for which the notification is sent
         //! @param property object containing the property value and configuration that was modified
         virtual void OnDocumentPropertyConfigModified([[maybe_unused]] const AZ::Uuid& documentId, [[maybe_unused]] const AtomToolsFramework::DynamicProperty& property) {}
+        
+        //! Signal that the property group visibility has been changed.
+        //! @param documentId unique id of material document for which the notification is sent
+        //! @param groupId id of the group that changed
+        //! @param visible whether the property group is visible
+        virtual void OnDocumentPropertyGroupVisibilityChanged([[maybe_unused]] const AZ::Uuid& documentId, [[maybe_unused]] const AZ::Name& groupId, [[maybe_unused]] bool visible) {}
     };
 
     using MaterialDocumentNotificationBus = AZ::EBus<MaterialDocumentNotifications>;

Gems/Atom/Tools/MaterialEditor/Code/Include/Atom/Document/MaterialDocumentRequestBus.h

@@ -19,6 +19,7 @@
 #include <AzCore/std/any.h>
 
 #include <AtomToolsFramework/DynamicProperty/DynamicProperty.h>
+#include <AtomToolsFramework/DynamicProperty/DynamicPropertyGroup.h>
 
 namespace AZ
 {
@@ -67,6 +68,10 @@ namespace MaterialEditor
         //! Returns a property object
         //! If the document is not open or the id can't be found, an invalid property is returned.
         virtual const AtomToolsFramework::DynamicProperty& GetProperty(const AZ::Name& propertyFullName) const = 0;
+        
+        //! Returns whether a property group is visible
+        //! If the document is not open or the id can't be found, returns false.
+        virtual bool IsPropertyGroupVisible(const AZ::Name& propertyGroupFullName) const = 0;
 
         //! Modify material property value
         virtual void SetPropertyValue(const AZ::Name& propertyFullName, const AZStd::any& value) = 0;