💡 Error on duplicated package.json entries

[Zamiell]

Suggest an idea for Knip

Currently, the following package.json file passes Knip:

{
  "name": "test",
  "dependencies": {
    "typescript": "5.9.3",
    "knip": "5.86.0"
  },
  "devDependencies": {
    "typescript": "5.9.3"
  }
}

However, I think that passing is a bug, because the "typescript" entry in "devDependencies" is unused.