[BUG] Select folder dialog appears when invoke 'Generate for folder' action

[tyuldashev]

Description When user starts test generation VSCode still asks for folder for which tests to be generated.

To Reproduce

1. In VSCode explorer right click on some folder with code to open context menu
2. Invoke 'UTBot: Generate Tests for Folder' menu action
3. UTBot asks to provide code folder .

Expected That no additional dialogs appears when users run this action by clicking on specific folder in Explorer. Such selection dialog appears only when action invoked through Action Palette or other way which has no 'folder context'.