feat: [UIE-9686] - IAM: fix filtering by entity's type (#13129)

* feat: [UIE-9686] - IAM: fix filtering by entity's type

* Added changeset: IAM: filtering by entity type at the Roles table

Author: aaleksee-akamai

packages/manager/.changeset/pr-13129-fixed-1763987727502.md

@@ -0,0 +1,5 @@
+---
+"@linode/manager": Fixed
+---
+
+IAM: filtering by entity type at the Roles table ([#13129](https://github.com/linode/manager/pull/13129))

packages/manager/src/features/IAM/Roles/RolesTable/RolesTable.tsx

@@ -100,9 +100,7 @@ export const RolesTable = ({ roles = [] }: Props) => {
   };
 
   const filteredRows = React.useMemo(() => {
-    if (!query) return roles;
-
-    return getFilteredRows(query, filterableEntityType?.value);
+    return getFilteredRows(query ?? '', filterableEntityType?.value);
   }, [roles, query, filterableEntityType]);
 
   // Get just the list of entity types from this list of roles, to be used in the selection filter