Code chat - help text missing the subcommand (fix microsoft#253300) (microsoft#253461)

Author: bpasero

src/vs/platform/environment/node/argv.ts

@@ -441,10 +441,11 @@ function wrapText(text: string, columns: number): string[] {
 export function buildHelpMessage(productName: string, executableName: string, version: string, options: OptionDescriptions<any>, capabilities?: { noPipe?: boolean; noInputFiles?: boolean; isChat?: boolean }): string {
 	const columns = (process.stdout).isTTY && (process.stdout).columns || 80;
 	const inputFiles = capabilities?.noInputFiles ? '' : capabilities?.isChat ? ` [${localize('cliPrompt', 'prompt')}]` : ` [${localize('paths', 'paths')}...]`;
+	const subcommand = capabilities?.isChat ? ' chat' : '';
 
 	const help = [`${productName} ${version}`];
 	help.push('');
-	help.push(`${localize('usage', "Usage")}: ${executableName} [${localize('options', "options")}]${inputFiles}`);
+	help.push(`${localize('usage', "Usage")}: ${executableName}${subcommand} [${localize('options', "options")}]${inputFiles}`);
 	help.push('');
 	if (capabilities?.noPipe !== true) {
 		help.push(buildStdinMessage(executableName, capabilities?.isChat));