Add linting support for catching potential usages of `partial` when using `as never`

[secustor]

Context

We are right now detecting only locations which should use the partial helper if they use as any, but we should do the same with as never

#44582 (comment)

This should be added to https://github.com/renovatebot/renovate/blob/main/tools/lint/rules/prefer-partial-in-specs.js