StatelessWidgets are not recognized as widgets and can't be moved to a file

[RyanParkGH]

Describe the bug

Using the refactor extract to file does not work on classes that extend StatelessWidget, the following error message occurs:
'Can only extract a widget expression or a method returning a widget'

Steps to Reproduce

1. Locate a class that extends StatelessWidget
2. Right-click on the widget's class name
3. Select Refactor > Extract Widget to File
4. See error message above

Expected behavior

The StatelessWidget is movable to a file, StatelessWidget extends Widget thus any class extending StatelessWidget is a Widget itself. If this is the not the case, the usefulness of the extraction refactor is extremely limited as all Widgets extracted from a build() are either StatefulWidget or StatelessWidget.

Screenshots

N/A

Software used

Android Studio Hedgehog | 2023.1.1 Patch 1
Build #AI-231.9392.1.2311.11255304, built on December 26, 2023
Runtime version: 17.0.7+0-17.0.7b1000.6-10550314 aarch64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
macOS 14.2.1
GC: G1 Young Generation, G1 Old Generation
Memory: 2048M
Cores: 8
Metal Rendering is ON
Registry:
    external.system.auto.import.disabled=true
    ide.text.editor.with.preview.show.floating.toolbar=false

Non-Bundled Plugins:
    com.intellij.marketplace (231.9392.3)
    Dart (231.9411)
    ru.adelf.idea.dotenv (2023.1)
    io.flutter (77.1.2)
    de.mariushoefler.flutter_enhancement_suite (1.7.1)

Additional context