[wix-devs] 5980 - ResolveSource not working

[Sean Hall]

While working on the DisplayInternalUI stuff,
https://github.com/wixtoolset/issues/issues/5980 came up in one of my
searches. In v3 during uninstallation, we always call
MsiSetMsiSetExternalUI(Record) with the uiLevel of INSTALLUILEVEL_NONE |
INSTALLUILEVEL_SOURCERESONLY. But we also
include INSTALLLOGMODE_RESOLVESOURCE in our message filter. Why are we
asking for resolve source messages when we're setting the uiLevel such that
we want Windows Installer to handle resolving source?