Describe the bug
When I load VS Code, and there's an update to the CodeQL CLI available, the CLI is automatically downloaded. However, VS Code will not load my workspace tree whilst the CLI is downloading (it's simply blank).

It seems like we're doing the CLI update in some sort of initialization handler which is preventing the workspace tree from loading.

To Reproduce
Open VS Code after CodeQL CLI has been updated.

Expected behavior
Workspace tree should be available while new CodeQL CLI is downloading.