Type inference broken for aggregation queries when extension is turned on.

[seanemmer]

Bug description

When an extension is turned on (have attempted this with multiple extensions) it causes aggregation queries to show types that are not fully "computed" or "reduced" as compared to when an extension is off.

How to reproduce

Instally any extension, e.g. prisma-kysely

Attempt to run any aggregation query:
await snapshotDb.snapshotRecord.aggregate({_count:true})

Type shown by VSCode:

Expected behavior

Prisma Schema

model SnapshotRecord {
  id String @default(cuid()) @id
}

Environment & setup

Node.js v20.11.0

Prisma Version

"@prisma/client": "5.13.0"
"prisma": "5.13.0",
"prisma-extension-kysely": "2.1.0",
"prisma-kysely": "1.8.0",