Downgrade the SDK version to 17.5.33428.388

[thedemons]

Opting for the latest SDK version inadvertently limited the versions of assemblies we could use. Initially, I assumed that the extension could reference any assemblies with the same name, similar to the behavior in C++. However, I discovered that there is a specific version requirement for referencing assemblies.

The required assemblies for SDK v17.5.33428.388 can be viewed here.

Some of the downsides of this are:

• The inline diff adornment can't check if there was a peek session that overlaps it anymore because InterLineAdornmentTag only exists in 17.8.37222 and above. It will now close any peek sessions that are in the same text view.
• We must use some ugly reflections in the proposals, because SuggestionAcceptedEventArgs only exists in SDK >=17.6.36389, potentially rendering the OnSuggestionAccepted useless in VS <17.6
• Had to suppress deprecated warnings in the proposal classes.

The inability to install earlier versions of VS continues to pose challenges for development and testing.

[fortenforge]

How did you discover this?

[thedemons]

From a user bug report Visual Studio 2022 (17.7.7) Chat isn't working, and how to know, that the rest should work.

It says "Microsoft.VisualStudio.Threading.17.8.0.0 is missing." in their activity log, and I saw that in the dependencies of the SDK, it says Microsoft.VisualStudio.Threading >= 17.8.14.