[BUG] import models from npm module doesn't work since zenstack version 2.6.2

[Tsimopak]

import models from npm module doens't work at all after moving from zenstack version 2.5.1 to 2.6.2

Steps to repro can be found here: #1626

[Tsimopak]

I think the issue started to happen when moving to pnpm, in that case, the path in node_modules is a bit more cumbersome