dart_pdf Arab Chars don't work

Describe the bug

You can't print arab chars to the PDF file properly

To Reproduce Code snippet to reproduce the behavior:

final pdf = pw.Document();
final font = pw.Font.ttf(await rootBundle.load('fonts/Lateef-Regular.ttf')); // or any other font that supports arabic letters
pdf.addPage(pw.Page(
  pageFormat: PdfPageFormat.a4,
  build: (pw.Context context) {
    return pw.Center(
      child: pw.Text(text, style: pw.TextStyle(font: font, fontSize: 30),textDirection: pw.TextDirection.rtl) // Try any direction they all create wrong results
    ); // Center
  })
); // Page
// Save
await file.writeAsBytes(await pdf.save());

Expected behavior

The resulting text should be from right to left and not mutilated.

Screenshots

With TextDirection omitted

textdirection omitted

With TextDirection.rtl

textdirection right to left

Flutter Doctor

[√] Flutter (Channel stable, 2.10.3, on Microsoft Windows [Version 10.0.19044.1586], locale de-DE)
    • Flutter version 2.10.3 at D:\Rashid\Programmieren\Programs\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 7e9793dee1 (3 weeks ago), 2022-03-02 11:23:12 -0600
    • Engine revision bd539267b4
    • Dart version 2.16.1
    • DevTools version 2.9.2

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\Rashid\AppData\Local\Android\sdk
    • Platform android-31, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.11+9-b60-7590822)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.11.10)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.11.32126.315
    • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2021.1)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.11+9-b60-7590822)

[√] VS Code (version 1.65.2)
    • VS Code at C:\Users\Rashid\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.36.0

[√] Connected device (3 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.19044.1586]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 99.0.4844.82
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 99.0.1150.39

[√] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

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