Fix return type for the exposed EditorResourcePicker method

doc/classes/EditorResourcePicker.xml

@@ -40,7 +40,7 @@
 			</description>
 		</method>
 		<method name="handle_menu_selected" qualifiers="virtual">
-			<return type="void" />
+			<return type="bool" />
 			<argument index="0" name="id" type="int" />
 			<description>
 				This virtual method can be implemented to handle context menu items not handled by default. See [method set_create_options].

editor/editor_resource_picker.cpp

@@ -687,7 +687,7 @@ void EditorResourcePicker::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("is_editable"), &EditorResourcePicker::is_editable);
 
 	ClassDB::add_virtual_method(get_class_static(), MethodInfo("set_create_options", PropertyInfo(Variant::OBJECT, "menu_node")));
-	ClassDB::add_virtual_method(get_class_static(), MethodInfo("handle_menu_selected", PropertyInfo(Variant::INT, "id")));
+	ClassDB::add_virtual_method(get_class_static(), MethodInfo(Variant::BOOL, "handle_menu_selected", PropertyInfo(Variant::INT, "id")));
 
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "base_type"), "set_base_type", "get_base_type");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "edited_resource", PROPERTY_HINT_RESOURCE_TYPE, "Resource", 0), "set_edited_resource", "get_edited_resource");