refactor table sorting to composables and shared SortableTableHeaderCell

e2e/utils/table.ts

@@ -1,4 +1,4 @@
-import type { Locator } from '@playwright/test';
+import type { Locator, Page } from '@playwright/test';
 
 /**
  * Extract the first cell's text content from each row in a table.
@@ -14,3 +14,12 @@ export async function getTableRowNames(table: Locator): Promise<string[]> {
     }
     return names;
 }
+
+/**
+ * Drop a table's persisted sort/filter state so a test starts from the defaults.
+ */
+export async function clearTableState(page: Page, key: string) {
+    await page.evaluate((storageKey) => {
+        localStorage.removeItem(storageKey);
+    }, key);
+}