* 3707 Changed getIconpath in serverTreeRenderer to always set iconPath if iconId is undefined. Changed renderConnection to always renderServerIcon
* 3707 Added default flag to KustoIcon in package.json
* fix caching issue
* 3707 Changed default to optional variable. Updated asyncServerTreeRenderer > getIconPath to check for default
* 3707 Changed logic for setting iconPath in getIconPath
Co-authored-by: chgagnon <chgagnon@microsoft.com>