[dotnet] Remove #nullable enable from CDP-generated types

Author: RenderMichael

third_party/dotnet/devtools/src/generator/Templates/DevToolsSessionDomains.hbs

@@ -27,10 +27,7 @@ namespace {{rootNamespace}}
         /// <summary>
         /// Gets the adapter for the {{Name}} domain.
         /// </summary>
-        public {{dehumanize Name}}.{{dehumanize Name}}Adapter {{dehumanize Name}}
-        {
-            get { return m_{{dehumanize Name}}.Value; }
-        }
+        public {{dehumanize Name}}.{{dehumanize Name}}Adapter {{dehumanize Name}} => m_{{dehumanize Name}}.Value;
 
 {{/each}}
         /// <summary>

third_party/dotnet/devtools/src/generator/Templates/command.hbs

@@ -1,7 +1,5 @@
 // <auto-generated />
 
-#nullable enable
-
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System.Text.Json.Serialization;

third_party/dotnet/devtools/src/generator/Templates/domain.hbs

@@ -1,7 +1,5 @@
 // <auto-generated />
 
-#nullable enable
-
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System;
@@ -62,9 +60,8 @@ namespace {{rootNamespace}}.{{domain.Name}}
         {
             if (e.DomainName == m_domainName)
             {
-                if (m_eventMap.ContainsKey(e.EventName))
+                if (m_eventMap.TryGetValue(e.EventName, out var eventData))
                 {
-                    var eventData = m_eventMap[e.EventName];
                     var eventArgs = e.EventData.Deserialize(eventData.EventArgsType, global::OpenQA.Selenium.DevTools.Json.DevToolsJsonOptions.Default);
                     eventData.EventInvoker(eventArgs);
                 }

third_party/dotnet/devtools/src/generator/Templates/event.hbs

@@ -1,7 +1,5 @@
 // <auto-generated />
 
-#nullable enable
-
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System;

third_party/dotnet/devtools/src/generator/Templates/type-enum.hbs

@@ -1,7 +1,5 @@
 // <auto-generated />
 
-#nullable enable
-
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System.Runtime.Serialization;

third_party/dotnet/devtools/src/generator/Templates/type-hash.hbs

@@ -1,7 +1,5 @@
 // <auto-generated />
 
-#nullable enable
-
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System.Collections.Generic;

third_party/dotnet/devtools/src/generator/Templates/type-object.hbs

@@ -1,7 +1,5 @@
 // <auto-generated />
 
-#nullable enable
-
 namespace {{rootNamespace}}.{{domain.Name}}
 {
     using System.Text.Json.Serialization;