InstallationManager::purgeObsoleteInstallations does not remove folder paths

When checking InstallationManager::purgeObsoleteInstallations I've entered by mistake a file path without qtlicd.exe at the end, i.e. a folder path:

[D__Work_LicenseServerQLS_dev_qls34_release_artifacts_service_artifacts]
path=D:\Work\LicenseServerQLS\dev\qls34\release_artifacts\service_artifacts
source=squish_installer
timestamp=2025-03-05 15:46:15
version=3.5

InstallationManager::purgeObsoleteInstallations does not remove this entry because the path is actually valid (it exists), it's just not a file path, but rather folder path.

Since the customers can edit qtlicd.ini, maybe InstallationManager::purgeObsoleteInstallations should also remove existing paths that are not actual (existing) file paths?