[BUG][PHP] operationAsyncWithHttpInfo incorrectly handles ConnectException (operationWithHttpInfo does this correct)

Bug Report Checklist

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

Description

Calling *AsyncWithHttpInfo breaks if a ConnectException is thrown, as this doesn't provide the getResponse method which is used in exception handling. *WithHttpInfo does this correctly and has a dedicated catch-branch for this.

openapi-generator version

docker image latest, branch master, e.g. now v7.21.0

OpenAPI declaration file content or url

not related to a specific declaration, applies to all due to the error handling

Generation Details

does not apply

Steps to reproduce

does not apply

Related issues/PRs

https://github.com/OpenAPITools/openapi-generator/pull/23455

Suggest a fix

Exception handling breaks for the Exception being of type ConnectException in https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator/src/main/resources/php/api.mustache#L485, needs same logic as https://github.com/OpenAPITools/openapi-generator/blob/master/modules/openapi-generator/src/main/resources/php/api.mustache#L485

Read modules/openapi-generator/src/main/resources/php/api.mustache around line 485 and compare the async exception handling with the corresponding *WithHttpInfo path. Generate a PHP client and verify that a ConnectException is handled without calling getResponse; the related pull request shows that work is already underway.