[test] Fix flaky error-recovery test

Author: eps1lon

test/development/pages-dir/client-navigation/index.test.ts

@@ -6,6 +6,7 @@ import {
   waitFor,
   check,
   retry,
+  getRedboxTotalErrorCount,
 } from 'next-test-utils'
 import webdriver, { BrowserInterface } from 'next-webdriver'
 import path from 'path'
@@ -1395,6 +1396,11 @@ describe('Client Navigation', () => {
             })
           },
         })
+        await retry(async () => {
+          expect(await getRedboxTotalErrorCount(browser)).toBe(
+            isReact18 ? 3 : 1
+          )
+        })
         await expect(browser).toDisplayRedbox(`
          {
            "count": ${isReact18 ? 3 : 1},