Web typings file system triggers FS errors when clicking through breadcrumbs

[mjbvz]

1. Set typescript.experimental.tsserver.web.typeAcquisition.enabled: true
2. Load repo such as https://insiders.vscode.dev/github/mjbvz/vscode-markdown-languageservice
3. Navigate into the typings for a package such as picomatch
4. In picomatch.d.ts, click on the breadcrumbs

bug
See errors such as:

Unable to resolve nonexistent file 'vscode-node-modules://github/vscode-vfs/github/mjbvz': Error: Unable to resolve nonexistent file 'vscode-node-modules://github/vscode-vfs/github/mjbvz'
    at s.resolve (https://main.vscode-cdn.net/insider/ebd67244fb2da33ab078bb2baa96106fda29f336/out/vs/workbench/workbench.web.main.js:627:11722)
    at async a.getChildren (https://main.vscode-cdn.net/insider/ebd67244fb2da33ab078bb2baa96106fda29f336/out/vs/workbench/workbench.web.main.js:1900:22440)
    at async https://main.vscode-cdn.net/insider/ebd67244fb2da33ab078bb2baa96106fda29f336/out/vs/workbench/workbench.web.main.js:594:19014