[Build] Upgraded NetAnalyzers to 7.0.1 (#24792)

* upgraded NetAnalyzers to 7.0.1

* fix spellcheck

* Microsoft.CodeAnalysis.NetAnalyzers 7.0.1

* rebase and fix

src/settings-ui/Settings.UI.UnitTests/BackwardsCompatibility/BackCompatTestProperties.cs

@@ -20,7 +20,7 @@ namespace Microsoft.PowerToys.Settings.UI.UnitTests.BackwardsCompatibility
         // Using Ordinal since this is used internally for a path
         private static readonly Expression<Func<string, bool>> SettingsFilterExpression = s => s == null || s.Contains("Microsoft\\PowerToys\\settings.json", StringComparison.Ordinal);
 
-        internal class MockSettingsRepository<T> : ISettingsRepository<T>
+        internal sealed class MockSettingsRepository<T> : ISettingsRepository<T>
             where T : ISettingsConfig, new()
         {
             private readonly ISettingsUtils _settingsUtils;

src/settings-ui/Settings.UI.UnitTests/ModelsTests/SettingsUtilsTests.cs

@@ -100,7 +100,7 @@ namespace CommonLibTest
               .Select(s => s[random.Next(s.Length)]).ToArray());
         }
 
-        private partial class TestClass : ISettingsConfig
+        private sealed partial class TestClass : ISettingsConfig
         {
             public int TestInt { get; set; } = 100;
 

src/settings-ui/Settings.UI.UnitTests/ViewModelTests/PowerLauncherViewModelTest.cs

@@ -14,7 +14,7 @@ namespace ViewModelTests
     [TestClass]
     public class PowerLauncherViewModelTest
     {
-        private class SendCallbackMock
+        private sealed class SendCallbackMock
         {
             public int TimesSent { get; set; }