Unable to process schema when title is ambiguous

Describe the bug

Unable to process schema /components/schemas/ActualApprovement:

Could not find reference in parsed models or enums

Failure to process schema has resulted in the removal of:
/components/schemas/ActualApprovement

Reference(ref='#/components/schemas/backend__server__src__models__types__approvement__ApprovementStatus')

OpenAPI Spec File
A link to an OpenAPI document which produces this issue. Ideally, write a minimal reproduction only containing the problematic pieces.

{
  "components": {
    "schemas": {
      "backend__gateways__types__ApprovementStatus": {
        "type": "string",
        "enum": [
          "in_progress",
          "suspended",
          "rejected",
          "closed"
        ],
        "title": "ApprovementStatus"
      },
      "backend__server__src__models__types__approvement__ApprovementStatus": {
        "type": "string",
        "enum": [
          "pending",
          "approved",
          "rejected",
          "cancelled"
        ],
        "title": "ApprovementStatus"
      },
"ActualApprovement": {
        "properties": {
          "status": {
            "$ref": "#/components/schemas/backend__server__src__models__types__approvement__ApprovementStatus"
          }
        },
        "type": "object",
        "required": [
          "status",
        ],
        "title": "ActualApprovement"
      },
}}}

Desktop (please complete the following information):

• OS: Ubuntu 22.04
• Python Version: 3.9
• openapi-python-client version 0.27.1

Additional context
Add any other context about the problem here.

Start by reproducing the failure with the OpenAPI document in the issue, focusing on schema parsing and reference resolution for the two schemas sharing the title "ApprovementStatus." Done means the referenced enum resolves correctly and the ActualApprovement schema is not removed.