Trying to create new project with hyphen in name results in empty directory added

[helin24]

Probably related to #5272

Steps to Reproduce

1. File > New project > Select Flutter > Next
2. Enter test-project as Project name > Finish
3. Error appears with "invalid module name..."
4. Exit here or create project with valid name. There will be an empty directory named test-project wherever the default is.

Version info

helinx-macbookpro2:IdeaProjects helinx$ flutter doctor -v
[✓] Flutter (Channel master, 2.11.0-0.0.pre.562, on macOS 12.2.1 21D62 darwin-arm,
    locale en)
    • Flutter version 2.11.0-0.0.pre.562 at /Users/helinx/Documents/flutter
    • Upstream repository git@github.com:helin24/flutter.git
    • Framework revision 2a2f973120 (3 days ago), 2022-02-15 07:33:57 -0800
    • Engine revision e683e0cd3b
    • Dart version 2.17.0 (build 2.17.0-105.0.dev)
    • DevTools version 2.10.0

[✗] Android toolchain - develop for Android devices
    ✗ Unable to locate Android SDK.
      Install Android Studio from: https://developer.android.com/studio/index.html
      On first launch it will assist you in installing the Android SDK components.
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for
      detailed instructions).
      If the Android SDK has been installed to a custom location, please use
      `flutter config --android-sdk` to update to that location.


[!] Xcode - develop for iOS and macOS (Xcode 13.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    ✗ CocoaPods not installed.
        CocoaPods is used to retrieve the iOS and macOS platform side's plugin code
        that responds to your plugin usage on the Dart side.
        Without CocoaPods, plugins will not work on iOS or macOS.
        For more info, see https://flutter.dev/platform-plugins
      To install see
      https://guides.cocoapods.org/using/getting-started.html#installation for
      instructions.

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (not installed)
    • Android Studio not found; download from
      https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for
      detailed instructions).

[✓] IntelliJ IDEA Community Edition (version 2021.3.2)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 64.1.4
    • Dart plugin version 213.5744.122

[✓] VS Code (version 1.64.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension can be installed from:
      🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (2 available)
    • iPhone 13 (mobile) • 541428D4-C628-40A6-937C-73E007FA4E28 • ios            •
      com.apple.CoreSimulator.SimRuntime.iOS-15-2 (simulator)
    • Chrome (web)       • chrome                               • web-javascript •
      Google Chrome 98.0.4758.102

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

! Doctor found issues in 3 categories.

[helin24]

Check whether this is an issue in flutter tools