chore(arborist): add missing registry mock in bin links reify test (#9746)

The `bin links adding and removing` test in
`workspaces/arborist/test/arborist/reify.js` reifies `rimraf@2.7.1`
without setting up a mock registry.

This adds `createRegistry(t, true)` so the test uses the mock registry
instead of depending on the real one.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>