`gz gui` does not work on Windows

Environment

• OS Version: Windows
• Source or binary build? source, gz-gui9

Description

• Expected behavior: gz gui to work on windows
• Actual behavior: Fails with

<internal:C:/Users/.../miniconda3/envs/gz-ws/lib/ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require': cannot load such file -- C:/Users/kimbe/Development/simulation/gazebo/gz-ws/install/lib/ruby/gz/cmdgui9 (LoadError)
        from <internal:C:/Users/.../miniconda3/envs/gz-ws/lib/ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:136:in `require'
        from C:/Users/kimbe/Development/simulation/gazebo/gz-ws/install/bin//gz:310:in `<main>'

See https://github.com/gazebosim/gazebo_test_cases/issues/1321