__internal is ignored

[divyenduz]

Photon has an __internal constructor argument meant to be used by projects like Studio. This is ignored right now (after platforms feature was introduced).

Reproduction: https://github.com/divyenduz/p2_181

To Reproduce

1. Clone the repo and run yarn
2. yarn lift save --name init
3. yarn prisma2 lift up
4. yarn prisma2 generate
5. yarn seed

It works and shows inserted data in log. It should not work though because in script.ts we are overriding the binaryPath and provide a linux binary. It should have failed.

[divyenduz]

Labelling this as a bug right now because Studio uses it. Candidate to discuss if this is to be removed in future or changed in a significant way.

[timsuchanek]

Note: Also update the spec when done.

[timsuchanek]

__internal works as intended. Please note that in the CLI output, we warn you, that we couldn't find the provided binary path, but resolved to one that we found anyways.
The error message for this use-case could be a bit more clearer, but as this is an internal api that no-one else uses, this is not urgent.