[BUG] kotlin-spring oauth does not work

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• What's the version of OpenAPI Generator used? 4.3.0
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Bounty to sponsor the fix (example)

Description

I tried running the petstore.yaml example (that include oauth implicit security), but no oauth code is generated. I tried via npm cli and docker cli.

openapi-generator version

via docker I also tried v4.0.0 and v3.3.4 with no success

OpenAPI declaration file content or url

petstore.yaml 2.0 or petstore.yaml 3.0

Command line used for generation

docker run --rm -v ${PWD}:/local openapitools/openapi-generator-cli generate
-i https://raw.githubusercontent.com/openapitools/openapi-generator/master/modules/openapi-generator/src/test/resources/2_0/petstore.yaml
-g kotlin-spring
-o /local/web

Steps to reproduce

Related issues/PRs

Suggest a fix

Start by running the provided Docker generation command with the linked OpenAPI 2.0 and 3.0 petstore.yaml inputs and the kotlin-spring generator. Inspect the kotlin-spring OAuth generation path and compare the generated output with the specification's implicit OAuth security; done means the expected OAuth code is generated.