az webapp deploy --src-path should use ARM Proxy

**Related command**
az webapp deploy --src-path

**Is your feature request related to a problem? Please describe.**
My application infrastructure is secured using virtual networks and private endpoints. Rather than logging into VMs and deploying updates to the app, I should be able to do it from my on-premises machines. But I get an 'Error 403 - Forbidden. The web app you have attempted to reach has blocked your access' message - which is expected. This is the current flow of the cli command


**Describe the solution you'd like**
A way to deploy my application from on-premise machines using az webapp deploy --src-path command. So that it can execute like this


**Describe alternatives you've considered**
[This article](https://learn.microsoft.com/en-us/azure/ai-services/openai/how-to/use-your-data-securely#configure-gateway-and-client) proposes using VPN which would be my last resort.

**Additional context**
A similar issue has been raised #21168 and was fixed in this PR #26620. Please note that I've tried and cannot use --src-url argument for deployment. Thanks.