Remove redundant IsElementStale method and use WebDriverExtensions.IsStale (#64549)

* Initial plan

* Remove redundant IsElementStale method and use WebDriverExtensions.IsStale

Co-authored-by: javiercn <6995051+javiercn@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: javiercn <6995051+javiercn@users.noreply.github.com>

Author: Copilot

src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTest.cs

@@ -989,7 +989,4 @@ private static Func<IWebDriver, bool> ElementWithTextAppears(By selector, string
         // Ensure we actually observed the new content, not just the presence of the element.
         return string.Equals(elements[0].Text, expectedText, StringComparison.Ordinal);
     };
-
-    private static bool IsElementStale(IWebElement element)
-        => EnhancedNavigationTestUtil.IsElementStale(element);
 }

src/Components/test/E2ETest/ServerRenderingTests/EnhancedNavigationTestUtil.cs

@@ -97,17 +97,4 @@ public static long GetScrollY(this IWebDriver browser)
 
     public static long SetScrollY(this IWebDriver browser, long value)
         => Convert.ToInt64(((IJavaScriptExecutor)browser).ExecuteScript($"window.scrollTo(0, {value})"), CultureInfo.CurrentCulture);
-
-    public static bool IsElementStale(IWebElement element)
-    {
-        try
-        {
-            _ = element.Enabled;
-            return false;
-        }
-        catch (StaleElementReferenceException)
-        {
-            return true;
-        }
-    }
 }

src/Components/test/E2ETest/ServerRenderingTests/InteractivityTest.cs

@@ -1308,7 +1308,7 @@ public void CanPerformNavigateToFromInteractiveEventHandler(bool suppressEnhance
 
         // Verify the elements were preserved if and only if they should be
         var shouldPreserveElements = !suppressEnhancedNavigation && !forceLoad;
-        Assert.Equal(shouldPreserveElements, !EnhancedNavigationTestUtil.IsElementStale(originalNavElem));
+        Assert.Equal(shouldPreserveElements, !originalNavElem.IsStale());
     }
 
     private void BlockWebAssemblyResourceLoad()