Fix BlazorWebJsInitializersTest (#57548)

Author: MackinnonBuck

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

@@ -28,7 +28,7 @@ public override Task InitializeAsync()
 
     [Theory]
     [MemberData(nameof(InitializerTestData))]
-    public void InitializersRunsModernCallbacksByDefaultWhenPresent(bool streaming, bool webassembly, bool server, List<string> expectedInvokedCallbacks)
+    public void InitializersRunsModernCallbacksByDefaultWhenPresent(bool streaming, bool webassembly, bool server, string[] expectedInvokedCallbacks)
     {
         var url = $"{ServerPathBase}/initializers?streaming={streaming}&wasm={webassembly}&server={server}";
         Navigate(url);
@@ -38,7 +38,7 @@ public void InitializersRunsModernCallbacksByDefaultWhenPresent(bool streaming,
             Browser.Exists(By.Id(callback));
         }
 
-        Browser.Equal(expectedInvokedCallbacks.Count, () => Browser.FindElements(By.CssSelector("#initializers-content > p")).Count);
+        Browser.Equal(expectedInvokedCallbacks.Length, () => Browser.FindElements(By.CssSelector("#initializers-content > p")).Count);
 
         if (server)
         {
@@ -49,7 +49,7 @@ public void InitializersRunsModernCallbacksByDefaultWhenPresent(bool streaming,
 
     [Theory]
     [MemberData(nameof(InitializerTestData))]
-    public void InitializersRunsClassicInitializersWhenEnabled(bool streaming, bool webassembly, bool server, List<string> expectedInvokedCallbacks)
+    public void InitializersRunsClassicInitializersWhenEnabled(bool streaming, bool webassembly, bool server, string[] expectedInvokedCallbacks)
     {
         EnableClassicInitializers(Browser);
         List<string> expectedCallbacks = ["classic-before-start", "classic-after-started", ..expectedInvokedCallbacks];
@@ -76,9 +76,9 @@ private void EnableClassicInitializers(IWebDriver browser)
         ((IJavaScriptExecutor)browser).ExecuteScript("sessionStorage.setItem('enable-classic-initializers', 'true')");
     }
 
-    public static TheoryData<bool, bool, bool, List<string>> InitializerTestData()
+    public static TheoryData<bool, bool, bool, string[]> InitializerTestData()
     {
-        var result = new TheoryData<bool, bool, bool, List<string>>
+        var result = new TheoryData<bool, bool, bool, string[]>
         {
             { false, false, false, ["classic-and-modern-before-web-start", "classic-and-modern-after-web-started","modern-before-web-start", "modern-after-web-started"] },
             { false, false, true, ["classic-and-modern-before-web-start", "classic-and-modern-after-web-started", "classic-and-modern-before-server-start", "classic-and-modern-after-server-started", "classic-and-modern-circuit-opened", "modern-before-web-start", "modern-after-web-started", "modern-before-server-start", "modern-after-server-started", "modern-circuit-opened" ] },