chore: add 'wcag22aa' tag to playwright accessibility test for WCAG 2.2 coverage

Author: plumdumpling

e2e/basic.spec.ts

@@ -8,7 +8,7 @@ test('BASIC', async ({page}, testInfo) => {
 
   // Check the whole page
   const axeBuilder = await new AxeBuilder({page})
-    .withTags(['wcag2a', 'wcag2aa', 'wcag21a', 'wcag21aa'])
+    .withTags(['wcag2a', 'wcag2aa', 'wcag21a', 'wcag21aa', 'wcag22aa'])
     .analyze();
   const violations = axeBuilder.violations;