FontFamily in ThemeData for the whole app doesn't affect Tabs when labelStyle is added. #127787
Description
Steps to reproduce
1-change app font family using theme ThemeData( brightness: Brightness.dark, fontFamily: "Any Font Famliy")
Expected results
All texts font family must be changed including Tabs,
Actual results
Tabs text Font Family not changed
Code sample
Code sample
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Logs
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Flutter Doctor output
Doctor output
Flutter (Channel stable, 3.7.12, on Microsoft Windows [Version 10.0.22621.1702], locale en-US)
• Flutter version 3.7.12 on channel stable at C:\src\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 4d9e56e694 (6 weeks ago), 2023-04-17 21:47:46 -0400
• Engine revision 1a65d409c7
• Dart version 2.19.6
• DevTools version 2.20.1
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
• Android SDK at C:\Users\UserName\AppData\Local\Android\sdk
• Platform android-33, build-tools 33.0.1
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[X] Visual Studio - develop for Windows
X Visual Studio not installed; this is necessary for Windows development.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2021.3)
• 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 11.0.13+0-b1751.21-8125866)
[√] VS Code (version 1.78.2)
• VS Code at C:\Users\Hussen\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.64.0
[√] Connected device (4 available)
• SM A525F (mobile) • RZ8RC1VEPDF • android-arm64 • Android 13 (API 33)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.22621.1702]
• Chrome (web) • chrome • web-javascript • Google Chrome 113.0.5672.127
• Edge (web) • edge • web-javascript • Microsoft Edge 113.0.1774.57
[√] HTTP Host Availability
• All required HTTP hosts are available