False positive: "someParameter" property must not have unevaluated properties

[ostrolucky]

Describe the bug
Getting a weird error on schemas generated by API Platform. This is same as reported at APIDevTools/swagger-cli#83 with addition of allowEmptyValue. Without it, it doesn't reproduce.

To Reproduce

Run spectral lint with spectral:oas ruleset on following schema

openapi: 3.1.0
info:
    title: Test
    version: 1.0.0

servers:
    - url: "https://example.com/{someParameter}"
      variables:
          someParameter:
              default: sometest123
              description: Some description!
              allowEmptyValue: false

paths: {}

will get you

 9:25    error  oas3-schema            "someParameter" property must not have unevaluated properties.  servers[0].variables.someParamete

Expected behavior
No errors

Environment (remove any that are not applicable):

• Library version: 6.14.1
• OS: MacOS 15.1

Additional context

Apparently, this issue doesn't happen if you either change version from 3.1.0 to 3.0.0, or remove allowEmptyValue