[python] Fixed the code to call the correct method to prevent duplication of Prefix added to the model when using `--model-name-prefix` #22188

wing328 merged 2 commits intoOpenAPITools:masterOpenAPITools/openapi-generator:masterfrom

MercMayhem:fix_issue_22146MercMayhem/openapi-generator:fix_issue_22146Copy head branch name to clipboard