Remote extension unavailable in integration tests

[joyceerhl]

Build: https://dev.azure.com/monacotools/a6d41577-0fa3-498e-af22-257312ff0545/_build/results?buildId=231131
Changes: e073d67...1a3cfcf

Finished waiting on IWorkspaceTrustManagementService.workspaceResolved.
Invoking resolveAuthority(test)...
[LocalProcess0][resolveAuthority(test,1)][0ms] obtaining proxy...
[LocalProcess0][resolveAuthority(test,1)][0ms] invoking...
Cannot get canonical URI because no extension is installed to resolve test: Error: Cannot get canonical URI because no extension is installed to resolve test
    at J.ac (vscode-file://vscode-app/d:/a/_work/1/VSCode-win32-x64/resources/app/out/vs/workbench/workbench.desktop.main.js:2637:10444)
[LocalProcess0][resolveAuthority(test,1)][3ms] returned an error {
  code: 'NoResolverFound',
  message: 'No remote extension installed to resolve test.'
}
resolveAuthority(test) returned an error after 4 ms {
  name: 'CodeExpectedError',
  _message: 'No remote extension installed to resolve test.',
  _code: 'NoResolverFound',
  isHandled: false
}
Error received from starting extension host (kind: Remote)
No remote extension installed to resolve test.
[remote-connection][attempt 1] An error occurred in initial connection! Will retry... Error:
No remote extension installed to resolve test.
[remote-connection][attempt 2] An error occurred in initial connection! Will retry... Error:
No remote extension installed to resolve test.
[remote-connection][attempt 3] An error occurred in initial connection! Will retry... Error:
No remote extension installed to resolve test.
[6448:0908/103729.782:INFO:CONSOLE(2636)] "Error: Could not obtain Extension Host Proxy", source: vscode-file://vscode-app/d:/a/_work/1/VSCode-win32-x64/resources/app/out/vs/workbench/workbench.desktop.main.js (2636)
[remote-connection][attempt 4] An error occurred in initial connection! Will retry... Error:
[main 2023-09-08T10:37:29.782Z] Extension host with pid 1508 exited with code: 0, signal: unknown.
No remote extension installed to resolve test.

Related: #192357

[alexdima]

I've added a whole lot of logging via #192938. Unfortunately we need to wait for this to happen again to learn more.

[alexdima]

Closing until we see this again. We will have more logs then.