Caching: Fixes regression of the caching of null representations for missing dictionary items (closes #20336 for 13) - #20344

  [chromium] › DefaultConfig\HelpPanel\helpLinks.spec.ts:17:5 › Help panel links › Check the youtube link works as expected 

    Test timeout of 40000ms exceeded.

    Error: locator.waitFor: Page closed
    =========================== logs ===========================
    waiting for locator('[aria-label="Reject all"]').first() to be visible
    ============================================================

      28 |       // If the YouTube consent popup is displayed, interact with it
      29 |       const rejectAllButton = await youtubePopup.locator('[aria-label="Reject all"]').first();
    > 30 |       await rejectAllButton.waitFor({ state: "visible" });
         |                             ^
      31 |       await rejectAllButton.click();
      32 |
      33 |       // Assert the URL of the popup

        at D:\a\1\s\tests\Umbraco.Tests.AcceptanceTest\tests\DefaultConfig\HelpPanel\helpLinks.spec.ts:30:29

    Pending operations:
      - locator.waitFor at tests\DefaultConfig\HelpPanel\helpLinks.spec.ts:30:29


    attachment #1: trace (application/zip) ─────────────────────────────────────────────────────────
    results\DefaultConfig-HelpPanel-helpLinks-Help-panel-links-Check-the-youtube-link-works-as-expected-chromium\trace.zip
    Usage:

        npx playwright show-trace results\DefaultConfig-HelpPanel-helpLinks-Help-panel-links-Check-the-youtube-link-works-as-expected-chromium\trace.zip

    ────────────────────────────────────────────────────────────────────────────────────────────────

    Retry #1 ───────────────────────────────────────────────────────────────────────────────────────

    Test timeout of 40000ms exceeded.

    Error: locator.waitFor: Page closed
    =========================== logs ===========================
    waiting for locator('[aria-label="Reject all"]').first() to be visible
    ============================================================

      28 |       // If the YouTube consent popup is displayed, interact with it
      29 |       const rejectAllButton = await youtubePopup.locator('[aria-label="Reject all"]').first();
    > 30 |       await rejectAllButton.waitFor({ state: "visible" });
         |                             ^
      31 |       await rejectAllButton.click();
      32 |
      33 |       // Assert the URL of the popup

        at D:\a\1\s\tests\Umbraco.Tests.AcceptanceTest\tests\DefaultConfig\HelpPanel\helpLinks.spec.ts:30:29

    Pending operations:
      - locator.waitFor at tests\DefaultConfig\HelpPanel\helpLinks.spec.ts:30:29


    attachment #1: trace (application/zip) ─────────────────────────────────────────────────────────
    results\DefaultConfig-HelpPanel-helpLinks-Help-panel-links-Check-the-youtube-link-works-as-expected-chromium-retry1\trace.zip
    Usage:

        npx playwright show-trace results\DefaultConfig-HelpPanel-helpLinks-Help-panel-links-Check-the-youtube-link-works-as-expected-chromium-retry1\trace.zip

    ────────────────────────────────────────────────────────────────────────────────────────────────

    Retry #2 ───────────────────────────────────────────────────────────────────────────────────────

    Test timeout of 40000ms exceeded.

    Error: locator.waitFor: Page closed
    =========================== logs ===========================
    waiting for locator('[aria-label="Reject all"]').first() to be visible
    ============================================================

      28 |       // If the YouTube consent popup is displayed, interact with it
      29 |       const rejectAllButton = await youtubePopup.locator('[aria-label="Reject all"]').first();
    > 30 |       await rejectAllButton.waitFor({ state: "visible" });
         |                             ^
      31 |       await rejectAllButton.click();
      32 |
      33 |       // Assert the URL of the popup

        at D:\a\1\s\tests\Umbraco.Tests.AcceptanceTest\tests\DefaultConfig\HelpPanel\helpLinks.spec.ts:30:29

    Pending operations:
      - locator.waitFor at tests\D