FileUpload: PT not passed to internal Messages component in advanced mode

Start in components/lib/fileupload/FileUpload.js at createAdvanced around line 678, then compare its internal Messages rendering with createBasic around line 742. Use the linked StackBlitz reproducer and verify that the fileupload.messages Pass-Through configuration styles or hides the Messages component in advanced mode without affecting other Messages instances.

Describe the bug

In advanced mode, the FileUpload component renders an internal component without forwarding the pt prop via ptm('messages'). This makes it impossible to style or hide the Messages via the nested Pass-Through pattern (pt.fileupload.messages).

The global pt.messages workaround works but is unscoped — it affects every instance in the application, not just the one inside FileUpload.

Source reference

In fileupload.js (createAdvanced, ~line 678), the Messages component is rendered without pt:
<Messages ref={messagesRef} __parentMetadata={{ parent: metaData }} />
In contrast, createBasic (~line 742) correctly passes it:
<Messages ref={messagesRef} pt={ptm('message')} __parentMetadata={{ parent: metaData }} />

Reproducer

https://stackblitz.com/edit/vitejs-vite-rkgm9vfm?file=src%2FApp.tsx

System Information

System:
    OS: Windows 11 10.0.26200
    CPU: (20) x64 13th Gen Intel(R) Core(TM) i7-1370P
    Memory: 10.13 GB / 31.66 GB
  Binaries:
    Node: 24.14.0 - C:\Program Files\nodejs\node.EXE
    npm: 11.9.0 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: 149.0.7827.55
    Edge: Chromium (140.0.3485.54)
    Firefox: 151.0.3 - C:\Program Files\Mozilla Firefox\firefox.exe
    Internet Explorer: 11.0.26100.8115
  npmPackages:
    primereact: ^10.9.7 => 10.9.7 
    react: ^19.2.3 => 19.2.3 
    tailwindcss: ^4.1.18 => 4.1.18

Steps to reproduce the behavior

import { PrimeReactProvider } from "primereact/api";
import { FileUpload } from "primereact/fileupload";

const pt = {
  fileupload: {
    messages: {
      root: { className: "hidden" },
    },
  },
};

export default function App() {
  return (
    <PrimeReactProvider value={{ unstyled: true, pt }}>
      <FileUpload
        mode="advanced"
        accept="image/*"
        maxFileSize={100000}
      />
    </PrimeReactProvider>
  );
}

1. Select a file that exceeds maxFileSize
2. Observe that the internal Messages component still renders with default classes (my-4 rounded-md)
3. The PT configuration has no effect

Expected behavior

The messages PT section inside fileupload should be applied to the internal component, allowing it to be styled or hidden.