previewFeatures = [] gets lost after Introspection

[janpio]

This is a valid schema:

generator client {
  provider        = "prisma-client-js"
  previewFeatures = []
}

datasource db {
  provider = "mysql"
  url      = "mysql://prisma:[email protected]:3306/Accidents"
}

After a db pull run it unfortunately looks like this:

generator client {
  provider        = "prisma-client-js"
}

datasource db {
  provider = "mysql"
  url      = "mysql://prisma:[email protected]:3306/Accidents"
}

model foo {
...

For some internal systems it would be nice if the empty previewFeatures array was kept after Introspection.