ci-main-mac.yml single-root-UI test randomly fails with "TypeError: Cannot read properties of undefined (reading 'tasks')"

[sean-mcmanus]

The failure is like

 TypeError: Cannot read properties of undefined (reading 'tasks')
at Context.<anonymous> (out/test/end-to-end-tests/single-root-UI/test/coverage.test.js:48:38)

For example: https://github.com/microsoft/vscode-cmake-tools/actions/runs/13551558856/attempts/1?pr=4300

It seems to eventually pass after retrying.

I haven't noticed the issue on Linux/Windows yet.