API Documentation doesn't show up if there's an error in a dependency

[minestarks]

Today, the "Show API documentation" works even when there are errors in the current project. This is good.

However, if there are errors in a dependency, the "Show API documentation" shows a blank page.

REPRO

MyProj/src/Main.qs

operation Main() : Unit {
    WillCauseCompilerError; // This error doesn't block documentation generation ✅
}

MyProj/src/qsharp.json

{
    "dependencies": {
        "MyDep": {
            "path": "../MyDep"
        }
    }
}

MyDep/src/Main.qs

operation DependencyFunction() : Unit {
    WillCauseCompilerError; // This blocks documentation generation! ❌
}

export DependencyFunction;

MyDep/src/qsharp.json

{}

Invoke "Show API Documentation" command in VS Code.

Expected

The documentation should still be generated for whatever did compile.

Nice to have: To avoid confusion, the documentation panel should also show any compiler errors that were in the project.

Actual

Blank documentation page.

Seen in 3b32013

[ScottCarda-MS]

Fixed with #2374