E2E test async robustness tweaks following recent failures

Author: SteveSandersonMS

test/Microsoft.AspNetCore.Blazor.E2ETest/Tests/BindTest.cs

@@ -115,12 +115,12 @@ public void CanBindCheckbox_InitiallyUnchecked()
             // Modify target; verify value is updated
             target.Click();
             WaitAssert.True(() => target.Selected);
-            Assert.Equal("True", boundValue.Text);
+            WaitAssert.Equal("True", () => boundValue.Text);
 
             // Modify data; verify checkbox is updated
             invertButton.Click();
             WaitAssert.False(() => target.Selected);
-            Assert.Equal("False", boundValue.Text);
+            WaitAssert.Equal("False", () => boundValue.Text);
         }
 
         [Fact]
@@ -135,12 +135,12 @@ public void CanBindCheckbox_InitiallyChecked()
             // Modify target; verify value is updated
             target.Click();
             WaitAssert.False(() => target.Selected);
-            Assert.Equal("False", boundValue.Text);
+            WaitAssert.Equal("False", () => boundValue.Text);
 
             // Modify data; verify checkbox is updated
             invertButton.Click();
             WaitAssert.True(() => target.Selected);
-            Assert.Equal("True", boundValue.Text);
+            WaitAssert.Equal("True", () => boundValue.Text);
         }
 
         [Fact]

test/Microsoft.AspNetCore.Blazor.E2ETest/Tests/ComponentRenderingTest.cs

@@ -328,7 +328,7 @@ public void CanRenderSvgChildComponentWithCorrectNamespace()
         public void LogicalElementInsertionWorksHierarchically()
         {
             var appElement = MountTestComponent<LogicalElementInsertionCases>();
-            Assert.Equal("First Second Third", appElement.Text);
+            WaitAssert.Equal("First Second Third", () => appElement.Text);
         }
 
         [Fact]