No errors at deployment when using runtime v4 with managed functions

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- [ ] No, I am using a different port number (`--port`) and accessing the CLI from that port
- [x] Yes, I am accessing the CLI from port `:4280`

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**Describe the bug**
When using runtime v4 with a JS/TS managed functions API, no error is shown during deployment with SWA CLI (shows success message) but no functions are actually deployed.

**Note:** Now, I know that v4 runtime is currently not supported, but I didn't at the time and was caught trying to understand why my functions were missing for hours.

**To Reproduce**
1. Create a SWA project with a function API using JS v4 runtime
2. Run SWA deploy

**Expected behavior**
A warning or error message should be displayed to the user to indicate that runtime v4 is not currently supported.

**Desktop (please complete the following information):**

- OS: MacOS
- Version 14.4

Comienza ejecutando la reproducción documentada de `swa deploy` con una API de managed-functions de JavaScript o TypeScript usando runtime v4, e inspecciona la salida detallada solicitada en la issue. Sigue cómo el despliegue gestiona el runtime no compatible; se considera terminado cuando el despliegue informa de una advertencia o un error claros en lugar de indicar éxito cuando no se despliega ninguna función.

Escrito por el modelo de indexación a partir del texto del issue.