Delete key removes adjacent functions along with connection line

### Which Data Mapper Version are you using ?

v2

### Describe the Bug with repro steps

Pressing the ‘Delete’ key on a selected connection line unexpectedly deletes adjacent functions instead of only removing the selected connection.

Steps to Reproduce:

1. Select a connection line between two functions
2. Press the Delete key.
3. Observe whether adjacent connections and/or functions are also deleted unexpectedly.

Expected behavior: only the selected connection line should be deleted.

### Screenshots or Videos

[https://github.com/user-attachments/assets/eeabda1c-e9c9-4aac-a5d1-961f18092620]()

### Version

5\.38.0

### Additional context

*No response*