LPD-53197 Add icon to view usages action

Author: adolfopa

modules/apps/site/site-cms-site-initializer/src/main/java/com/liferay/site/cms/site/initializer/internal/display/context/StructuresSectionDisplayContext.java

@@ -109,7 +109,7 @@ public List<FDSActionDropdownItem> getFDSActionDropdownItems()
 							"/structure-usages"),
 						_themeDisplay),
 					"objectDefinitionId", "{id}"),
-				null, "viewUsages",
+				"list-ul", "viewUsages",
 				LanguageUtil.get(_httpServletRequest, "view-usages"), "get",
 				null, null),
 			new FDSActionDropdownItem(