Respect Group Policies for sources

[florelis]

• Group Policy for disabling the default sources was not respected when getting the catalogs through COM. Added missing check for GP.
• When we add a source and there is a Group Policy for allowed sources, we check the source details against the list of allowed sources. In this check we compare the types, but do a direct comparison without considering that an empty type defaults to the preindexed type. Meaning that if we had preindexed source S as allowed, we would accept winget source add --type Microsoft.PreIndexed.Package S ... but not winget source add S .... Fixed this by resolving the source type name before getting to this point.

Microsoft Reviewers: codeflow:open?pullrequest=https://github.com/microsoft/winget-cli/pull/3367&drop=dogfoodAlpha