Running db pull after upgrading to 3.x removed name from @@unique

[paustint]

Bug description

I had an existing unique constraint @@unique([userId, url, uniqueId], name: "uniqueOrg") and I wanted to keep the previously generated db name for this, and following the upgrade guide I ran npx prisma db pull

Expected Result:
@@unique([jetstreamUserId, jetstreamUrl, uniqueId], name: "uniqueOrg", map: "uniqueOrg")

Actual Result:
@@unique([jetstreamUserId, jetstreamUrl, uniqueId], map: "uniqueOrg")

I noticed because after running prisma generate, my code failed to compile because of a mis-named constraint.

How to reproduce

Start with version 2.3
Create a schema and add @@unique with a specific name
push all changes to db
upgrade to v 3.x
run db pull

Expected behavior

The name should be retained
@@unique([jetstreamUserId, jetstreamUrl, uniqueId], name: "uniqueOrg", map: "uniqueOrg")

Prisma information

model SalesforceOrg {
  id                     Int                                       @id @default(autoincrement())
  userId        String                                    @db.VarChar
  uniqueId               String                                    @db.VarChar
  filterText             String                                    @db.VarChar
  accessToken            String                                    @db.VarChar
  instanceUrl            String                                    @db.VarChar
  loginUrl               String                                    @db.VarChar
  userId                 String                                    @db.VarChar(18)
  email                  String                                    @db.VarChar
  organizationId         String                                    @db.VarChar(18)
  username               String                                    @db.VarChar
  displayName            String                                    @db.VarChar
  thumbnail              String?                                   @db.VarChar
  apiVersion             String?                                   @db.VarChar
  orgName                String?                                   @db.VarChar
  orgCountry             String?                                   @db.VarChar
  orgInstanceName        String?                                   @db.VarChar
  orgIsSandbox           Boolean?
  orgLanguageLocaleKey   salesforce_org_orglanguagelocalekey_enum?
  orgNamespacePrefix     String?                                   @db.VarChar
  orgTrialExpirationDate DateTime?                                 @db.Date
  createdAt              DateTime                                  @default(now()) @db.Timestamp(6)
  updatedAt              DateTime                                  @updatedAt
  connectionError        String?                                   @db.VarChar
  url           String?                                   @db.VarChar
  label                  String?                                   @db.VarChar(100)
  orgOrganizationType    String?                                   @db.VarChar

  @@unique([userId, url, uniqueId], name: "uniqueOrg", map: "uniqueOrg")
  @@map("salesforce_org")
}

Environment & setup

• OS: Mac OS
• Database: PostgreSQL
• Node.js version: v15.14.0

Prisma Version

prisma                  : 3.0.2
@prisma/client          : 3.0.2
Current platform        : darwin
Query Engine (Node-API) : libquery-engine 2452cc6313d52b8b9a96999ac0e974d0aedf88db (at node_modules/@prisma/engines/libquery_engine-darwin.dylib.node)
Migration Engine        : migration-engine-cli 2452cc6313d52b8b9a96999ac0e974d0aedf88db (at node_modules/@prisma/engines/migration-engine-darwin)
Introspection Engine    : introspection-core 2452cc6313d52b8b9a96999ac0e974d0aedf88db (at node_modules/@prisma/engines/introspection-engine-darwin)
Format Binary           : prisma-fmt 2452cc6313d52b8b9a96999ac0e974d0aedf88db (at node_modules/@prisma/engines/prisma-fmt-darwin)
Default Engines Hash    : 2452cc6313d52b8b9a96999ac0e974d0aedf88db
Studio                  : 0.423.0