Patterned (4XX) HTTP Status Codes not respected

[cjkindel]

Describe the bug
Documentation indicates that patterned HTTP status codes may be used for Response Objects. Supply a patterened HTTP status code in this manner results in the following warning:
Invalid response status code 4XX (not a valid HTTP status code), response will be omitted from generated client

OpenAPI Spec File
openapi-python-client generate --path PatternedStatusCodeRepro.openapi.yaml.txt
(github won't allow uploading a .yaml)

PatternedStatusCodeRepro.openapi.yaml.txt

Desktop:

• OS: macOS 15.5
• Python Version: 3.13.3
• openapi-python-client version: 0.25.0

Additional context
I believe the root cause here is this int conversion of the status code. This obviously won't work with a patterned HTTP status code like 4XX.