[BUG] Typescript generator ignores disallowAdditionalPropertiesIfNotPresent

Description

The types it generates doesnt include the additionalProperties object even though it should exist for the request im sending.
I tested the same openAPI file with the Java generator and it works perfectly fine with the additional fields included in the returned object.

openapi-generator version

7.19.0

OpenAPI declaration file content or url

https://openapi.bamboohr.io/main/latest/docs/openapi/public-openapi.yaml


##### Generation Details

openapi-generator-cli generate
-i https://openapi.bamboohr.io/main/latest/docs/openapi/public-openapi.yaml
-g typescript-fetch
-o ~/code/bambooAPI-ts
--additional-properties=disallowAdditionalPropertiesIfNotPresent=false,nullSafeAdditionalProps=true;

##### Steps to reproduce

use the typescript-fetch generator 

openapi-generator-cli generate
-i https://openapi.bamboohr.io/main/latest/docs/openapi/public-openapi.yaml
-g typescript-fetch
-o ~/code/bambooAPI-ts
--additional-properties=disallowAdditionalPropertiesIfNotPresent=false,nullSafeAdditionalProps=true;

Start by reproducing the issue with the provided BambooHR OpenAPI URL and the typescript-fetch generation command, then trace how disallowAdditionalPropertiesIfNotPresent and nullSafeAdditionalProps are handled by that generator. Done means generated types include the expected additionalProperties object when the option is false, with coverage or a verified reproduction demonstrating the behavior.