[Bug] imports of a preloaded extraLib inside another extraLib fail

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Code

monaco.languages.typescript.typescriptDefaults.addExtraLib(
    `
    declare module 'sausage.js' {
        class Sausage {
            foo(): void;
        }
        export {Sausage};
    }
    `
);
monaco.languages.typescript.typescriptDefaults.addExtraLib(
    `
    import * as SausageLib from 'sausage.js';
    declare namespace SausageFactory {
        function newSausage(): SausageLib.Sausage;
    }
    `
);

monaco.editor.create(document.getElementById('container'), {
	value: `import * as SausageLib from 'sausage.js';
// Works
(new SausageLib.Sausage()).foo();

// Should work; partially works only if 'sausage.js' is not imported in the second extraLib.
var q = SausageFactory.newSausage();`,
	language: 'typescript'
});

Actual Behavior

The second extraLib (the one with SausageFactory namespace`) fails without any errors; its typings are missing.

Expected Behavior

The second extraLib should load just fine, including the typings derived from the 'sausage.js' module.

Additional Context

So my instances of editors should load two large libraries: one as a module (a 3rd-party chonk of .d.ts) and another as a namespace (my typings), and this namespace extends a lot of classes from that 3rd-party module and uses its types, too, so it needs the module to import to provide complete typings to the end-user.

Right now I can only load them both if I don't import the 'sausage.js' inside my own library's typings, but that kinda destroys the point of having typings as they become incomplete for the namespaced library.

Start with the supplied Monaco Editor Playground snippet and the two typescriptDefaults.addExtraLib calls. Reproduce the missing SausageFactory typings, then trace how imported declarations from one extraLib are registered and resolved by the TypeScript integration. Done means the namespace retains its imported Sausage type when both extraLibs are loaded.