Sort proto messages and files, fix export state when a configuration is modified

src/app/file-tree/file-tree.component.ts

@@ -36,6 +36,8 @@ interface FileNode {
   level: number;
 }
 
+const collator = new Intl.Collator(undefined, { numeric: true });
+
 @Component({
   selector: 'app-file-tree',
   standalone: true,
@@ -201,7 +203,7 @@ export class FileTreeComponent implements OnInit, OnDestroy {
   }
 
   private sortFiles = (a: { name?: string }, b: { name?: string }) =>
-    new Intl.Collator(undefined, { numeric: true }).compare(a.name!, b.name!);
+    collator.compare(a.name!, b.name!);
 
   private recursiveSort(files: FileOrFolder[]) {
     for (const file of files) {