Can't edit settings of profiles used in a layout

[blsz]

Layouts appear to make copies of profile settings rather that referencing them. The result is that you can not edit the settings of a profile in a layout.

1. Create an SSH profile with several port forwards.
2. Create a layout that uses the SSH profile.
3. Add a port forward to the SSH profile.

The newly added port forward does not appear in the layout, even after re-opening the layout or re-opening Tabby!

The profile settings are duplicated into a layout section of config.yaml when the layout is created and there is no way to subsequently edit the settings of profiles used in a layout in the GUI.