Provide previous Qt Creator in maintenance tool

I again made the mistake of installing the latest Qt Creator version which comes with annoying glitches (already reported). Unfortunately it is not possible to revert to previous versions with the Qt Maintenance tool. Please add the option for installing old Qt Creator versions for such cases.

Edit: I just saw that we can download the old installers from the Qt user account. Nevertheless it would be useful to directly install it from the maintenance tool.