[BUG] Path validation failed for /applications/{path:.+}:

Bug Report Checklist

• [Yes ] Have you provided a full/minimal spec to reproduce the issue?
• [Yes ] Have you validated the input using an OpenAPI validator (example)?
• [Yes ] Have you tested with the latest master to confirm the issue still exists?
• [Yes ] Have you searched for related issues/PRs?
• [Yes ] What's the actual output vs expected output?
• [Yes ] [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

I currently have a path as

/applications/{path:.+}:

Which works till version before 6.2.0 , when I upgrade to 6.2.0 then I get following error:

[ERROR] 
org.openapitools.codegen.SpecValidationException: There were issues with the specification. The option can be disabled via validateSpec (Maven/Gradle) or --skip-validate-spec (CLI).
 | Error count: 1, Warning count: 2
Errors: 
	-paths.'/applications/{path:.+}'. Declared path parameter path:.+ needs to be defined as a path parameter in path or operation level
Warnings: 
	-paths.'/applications/{path:.+}'. Declared path parameter path:.+ needs to be defined as a path parameter in path or operation level

openapi-generator version

6.2.0

OpenAPI declaration file content or url

Generation Details

mvn clean install

Start with the OpenAPI path /applications/{path:.+} and the SpecValidationException produced during mvn clean install; compare validation behavior before and after version 6.2.0. Done means this declaration validates without treating path:.+ as an undefined path parameter, while preserving normal path-parameter validation.