Track widget rebuilds not working

## Steps to Reproduce

"Track widget rebuilds" shows nothing.


## Version info

```
[✓] Flutter (Channel master, 3.13.0-7.0.pre.28, on Microsoft Windows [Version 10.0.22621.1992], locale en-US)
• Flutter version 3.13.0-7.0.pre.28 on channel master at E:\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 3a1300e0c4 (34 hours ago), 2023-07-19 20:28:57 -0700
• Engine revision 56e88e8b0e
• Dart version 3.1.0 (build 3.1.0-328.0.dev)
• DevTools version 2.25.0

[✓] Windows Version (Installed version of Windows is version 10 or higher)

[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
• Android SDK at C:\Users\ADMIN\AppData\Local\Android\Sdk
• Platform android-33, build-tools 32.0.0
• ANDROID_HOME = C:\Users\ADMIN\AppData\Local\Android\Sdk
• ANDROID_SDK_ROOT = C:\Users\ADMIN\AppData\Local\Android\Sdk
• Java binary at: D:\Program Files\Android\Android Studio\jbr\bin\java
• Java version OpenJDK Runtime Environment (build 17.0.6+0-b2043.56-9586694)
• All Android licenses accepted.

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

[✓] Visual Studio - develop Windows apps (Visual Studio Build Tools 2022 17.6.5)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools
• Visual Studio Build Tools 2022 version 17.6.33829.357
• Windows 10 SDK version 10.0.22621.0

[✓] Android Studio (version 2022.2)
• Android Studio at D:\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 17.0.6+0-b2043.56-9586694)

[✓] IntelliJ IDEA Ultimate Edition (version 2021.3)
• IntelliJ at D:\Program Files\JetBrains\IntelliJ IDEA 2021.3.2
• 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

[✓] Connected device (3 available)
• Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.22621.1992]
• Chrome (web) • chrome • web-javascript • Google Chrome 115.0.5790.98

[✓] Network resources
• All expected network resources are available.

• No issues found!
```