chore(dotnet): no nested namespace in transport channels (#17273)

utils/doclint/generateDotnetApi.js

@@ -226,11 +226,6 @@ for (const [name, type] of modelTypes)
 for (const [name, literals] of enumTypes)
   renderEnum(name, literals);
 
-if (process.argv[3] !== '--skip-format') {
-  // run the formatting tool for .NET, to ensure the files are prepped
-  execSync(`dotnet format "${outputDir}"`);
-}
-
 /**
  * @param {string} name
  */

utils/generate_dotnet_channels.js

@@ -209,11 +209,10 @@ function writeCSharpClass(className, inheritFrom, serializedProperties) {
   channels_ts.push('using System.Collections.Generic;');
   channels_ts.push('using System.Text.Json.Serialization;');
   channels_ts.push(``);
-  channels_ts.push(`namespace Microsoft.Playwright.Transport.Protocol`);
-  channels_ts.push(`{`);
-  channels_ts.push(`    internal class ${className}${inheritFrom ? ' : ' + inheritFrom : ''}`);
+  channels_ts.push(`namespace Microsoft.Playwright.Transport.Protocol;`);
+  channels_ts.push(``);
+  channels_ts.push(`internal class ${className}${inheritFrom ? ' : ' + inheritFrom : ''}`);
   channels_ts.push(serializedProperties);
-  channels_ts.push(`}`);
   channels_ts.push(``);
   writeFile(`${className}.cs`, channels_ts.join('\n'));
 }