[Bug] Runtime error when using `_count` inside the `include`

[jiashengguo]

Description and expected behavior

/// User model
model User {
    id    Int    @id @default(autoincrement())
    email String @unique
    posts Post[]
}

/// Post model
model Post {
    id        Int       @id @default(autoincrement())
    createdAt DateTime  @default(now())
    updatedAt DateTime  @updatedAt
    title     String
    content   String?
    published Boolean   @default(false)
    author    User      @relation(fields: [authorId], references: [id])
    authorId  Int
    comments  Comment[]
}

model Comment {
    id      Int    @id @default(autoincrement())
    content String
    post    Post   @relation(fields: [postId], references: [id])
    postId  Int
}

await db.user.findMany({
    include: {
      posts: {
        select: {
          _count: {
            select: { comments: true },
          },
        },
      },
    },
  });

/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/@zenstackhq/runtime/src/client/query-utils.ts:33
        throw new QueryError(`Field "${field}" not found in model "${model}"`);
              ^
QueryError: Field "_count" not found in model "Post"
    at requireField (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/@zenstackhq/runtime/src/client/query-utils.ts:33:15)
    at <anonymous> (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/@zenstackhq/runtime/src/client/crud/dialects/sqlite.ts:186:46)
    at Array.map (<anonymous>)
    at <anonymous> (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/@zenstackhq/runtime/src/client/crud/dialects/sqlite.ts:185:26)
    at parseSelectArg (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/kysely/dist/cjs/parser/select-parser.js:14:31)
    at SelectQueryBuilderImpl.select (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/kysely/dist/cjs/query-builder/select-query-builder.js:64:144)
    at SqliteCrudDialect.buildRelationJSON (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/@zenstackhq/runtime/src/client/crud/dialects/sqlite.ts:150:19)
    at <anonymous> (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/@zenstackhq/runtime/src/client/crud/dialects/sqlite.ts:62:18)
    at parseSelectArg (/Users/jiasheng/Work/repo/v3-doc-quick-start/node_modules/kysely/dist/cjs/parser/select-parser.js:14:31)

Environment (please complete the following information):

• ZenStack version: 3.6.4
• Database type: sqlite
• Node.js/Bun version: 25.2.1
• Package manager: npm

Additional context
Add any other context about the problem here.