[BUG][Kotlin] properties title name "$and" getting compile error

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• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

properties title name "$and" getting compile error

openapi-generator version

gradle plugin 7.10.0

OpenAPI declaration file content or url

  /store/collections:
    get:
      operationId: GetCollections
      summary: List Collections
      description: Retrieve a list of collections. The collections can be filtered by fields such as `handle`. The collections can also be sorted or paginated.
      x-authenticated: false
      externalDocs:
        url: https://docs.medusajs.com/v2/resources/storefront-development/products/collections/list
        description: 'Storefront guide: How to retrieve a list of collections.'
      parameters:
        - name: fields
          in: query
          description: Comma-separated fields that should be included in the returned data. if a field is prefixed with `+` it will be added to the default fields, using `-` will remove it from the default fields. without prefix it will replace the entire default fields.
          required: false
          schema:
            type: string
            title: fields
        - name: offset
          in: query
          description: The number of items to skip when retrieving a list.
          required: false
          schema:
            type: number
            title: offset
            description: The number of items to skip when retrieving a list.
        - name: limit
          in: query
          description: Limit the number of items returned in the list.
          required: false
          schema:
            type: number
            title: limit
            description: Limit the number of items returned in the list.
        - name: order
          in: query
          description: The field to sort the data by. By default, the sort order is ascending. To change the order to descending, prefix the field name with `-`.
          required: false
          schema:
            type: string
            title: order
            description: The field to sort the data by. By default, the sort order is ascending. To change the order to descending, prefix the field name with `-`.
        - name: title
          in: query
          required: false
          schema:
            oneOf:
              - type: string
                title: title
                description: Filter by a collection's title.
              - type: array
                description: Filter by collection titles.
                items:
                  type: string
                  title: title
                  description: A title.
        - name: handle
          in: query
          required: false
          schema:
            oneOf:
              - type: string
                title: handle
                description: Filter by a collection's handle.
              - type: array
                description: Filter by collection handles.
                items:
                  type: string
                  title: handle
                  description: A handle.
        - name: q
          in: query
          description: Search term to filter the collection's searchable properties.
          required: false
          schema:
            type: string
            title: q
            description: Search term to filter the collection's searchable properties.
        - name: $and
          in: query
          description: Join query parameters with an AND condition. Each object's content is the same type as the expected query parameters.
          required: false
          schema:
            type: array
            description: Join query parameters with an AND condition. Each object's content is the same type as the expected query parameters.
            items:
              type: object
            title: $and
        - name: $or
          in: query
          description: Join query parameters with an OR condition. Each object's content is the same type as the expected query parameters.
          required: false
          schema:
            type: array
            description: Join query parameters with an OR condition. Each object's content is the same type as the expected query parameters.
            items:
              type: object
            title: $or
      tags:
        - Collections
      responses:
        '200':
          description: OK
          content:
            application/json: {}

Generation Details

generated getCollections functions body

 val localVariableAuthNames = listOf<String>()

  val localVariableBody = 
      io.ktor.client.utils.EmptyContent
  
  val localVariableQuery = mutableMapOf<String, List<String>>()
  fields?.apply { localVariableQuery["fields"] = listOf("$fields") }
  offset?.apply { localVariableQuery["offset"] = listOf("$offset") }
  limit?.apply { localVariableQuery["limit"] = listOf("$limit") }
  order?.apply { localVariableQuery["order"] = listOf("$order") }
  title?.apply { localVariableQuery["title"] = listOf("$title") }
  handle?.apply { localVariableQuery["handle"] = listOf("$handle") }
  q?.apply { localVariableQuery["q"] = listOf("$q") }
  dollarAnd?.apply { localVariableQuery["$and"] = toMultiValue(this, "multi") }
  dollarOr?.apply { localVariableQuery["$or"] = toMultiValue(this, "multi") }
  val localVariableHeaders = mutableMapOf<String, String>()
  
  val localVariableConfig = RequestConfig<kotlin.Any?>(
      RequestMethod.GET,
      "/store/collections",
      query = localVariableQuery,
      headers = localVariableHeaders,
      requiresAuthentication = false,
  )
  
  return request(
      localVariableConfig,
      localVariableBody,
      localVariableAuthNames
  ).wrap()

problem is in these lines

dollarAnd?.apply { localVariableQuery["$and"] = toMultiValue(this, "multi") }
dollarOr?.apply { localVariableQuery["$or"] = toMultiValue(this, "multi") }

localVariableQuery["$and"] should be localVariableQuery["\$and"]
localVariableQuery["$or"] should be localVariableQuery["\$or"]

Start from the generated getCollections function and trace the Kotlin generator logic that emits query-map string literals for parameter names such as $and and $or. Reproduce the issue with the supplied OpenAPI declaration, then verify that the generated Kotlin source compiles and preserves the literal parameter names.