test: adds test to check if adding a new company or people works (#1714)

* test: adds test to check if adding a new company or people works

* test: improves people/add and companies/add tests

* style: cleanup

* style: cleanup

front/src/modules/ui/layout/components/PageAddButton.tsx

@@ -8,10 +8,11 @@ type OwnProps = {
 export const PageAddButton = ({ onClick }: OwnProps) => (
   <IconButton
     Icon={IconPlus}
+    dataTestId="add-button"
     size="medium"
     variant="secondary"
-    data-testid="add-button"
     accent="default"
     onClick={onClick}
+    ariaLabel="Add"
   />
 );