Fix isSelectedAll when no items are visibile

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/renderer/components/+apps-releases/releases.tsx

@@ -112,8 +112,10 @@ class NonInjectedHelmReleases extends Component<Dependencies & Props> {
         item.toggle();
       },
 
-      isSelectedAll: (visibleItems: RemovableHelmRelease[]) =>
-        visibleItems.every((release) => release.isSelected),
+      isSelectedAll: (visibleItems: RemovableHelmRelease[]) => (
+        visibleItems.length > 0
+        && visibleItems.every((release) => release.isSelected)
+      ),
 
       toggleSelectionAll: (visibleItems: RemovableHelmRelease[]) => {
         let selected = false;