Fix the "tsc watch" task when references are used

Moves the `--watch` option at the end of the `tsc` invocation, as `--build`
is required to be the first option on the call.

Fixes #66875

extensions/typescript-language-features/src/features/task.ts

@@ -197,7 +197,7 @@ class TscTaskProvider implements vscode.TaskProvider {
 				project.workspaceFolder || vscode.TaskScope.Workspace,
 				localize('buildAndWatchTscLabel', 'watch - {0}', label),
 				'tsc',
-				new vscode.ShellExecution(command, ['--watch', ...args]),
+				new vscode.ShellExecution(command, [...args, '--watch']),
 				'$tsc-watch');
 			watchTask.group = vscode.TaskGroup.Build;
 			watchTask.isBackground = true;
@@ -272,4 +272,4 @@ export default class TypeScriptTaskProviderManager {
 			this.taskProviderSub = vscode.workspace.registerTaskProvider('typescript', new TscTaskProvider(this.client));
 		}
 	}
-}
+}