fix: MRT_ExpandButton 'actionIconProps.title' incorrectly nullish coalescing (#420)

Author: jrhut

packages/mantine-react-table/src/components/buttons/MRT_ExpandButton.tsx

@@ -59,9 +59,9 @@ export const MRT_ExpandButton = <TData extends MRT_RowData>({
     <Tooltip
       disabled={!canExpand && !DetailPanel}
       label={
-        (actionIconProps?.title ?? isExpanded)
+        actionIconProps?.title ?? (isExpanded
           ? localization.collapse
-          : localization.expand
+          : localization.expand)
       }
       openDelay={1000}
       withinPortal