Calling openNotebookDocument with hidden notebook URI creates another untitled*.ipynb with same URI #234137
Description
Investigated from: microsoft/vscode-python#24148 (review)
In the reloading of notebook document such as native REPL, calling
await workspace.openNotebookDocument(mementoValue as Uri);
works fine if the notebook document is visible.
Problem happens when user hide their notebook document (such as native REPL) hiding behind some untitled text file, and then calling
await workspace.openNotebookDocument(mementoValue as Uri);
will create another instance of untitled.ipynb with the same exact URI as the notebook that was hidden.