src/vs/workbench/services/configuration/common/configurationModels.ts/Configuration/compareAndDeleteFolderConfiguration
class Configuration:	override compareAndDeleteFolderConfiguration(folder: URI): IConfigurationChange {
		if (this._workspace && this._workspace.folders.length > 0 && this._workspace.folders[0].uri.toString() === folder.toString()) {
			// Do not remove workspace configuration
			return { keys: [], overrides: [] };
		}
		return super.compareAndDeleteFolderConfiguration(folder);
	}