[BUG] Mango parent session spawns child sessions continuously with Noctalia

Submission checklist

• I have searched existing issues and confirmed this is not a duplicate.
• I am using the latest available version of Noctalia.

Bug description

After applying the official builtin theme for Mango, a continuous loop occurs, spawning a new Mango session with Noctalia running inside it. Without manual intervention (e.g. killing the initial Mango session), the loop continues indefinitely.

Steps to reproduce

1. Start noctalia
2. Setttings > Templates > Built-in templates > Mango

Expected behavior

The theme (e.g. border colors, jump labels) should be applied successfully.

Actual behavior

A new parent Mango session launches with Noctalia inside it. Within this parent session, child sessions are continuously spawned with Noctalia.

Logs / error output

Noctalia version

v5.1.0

Compositor

Mango

Distribution

NixOS

Environment information

Installation method: nixpkgs unstable
GPU: NVIDIA GeForce RTX 5060

Additional context

No response