Select first enabled process, not first existing

[stijnveenman]

Defect

Version of process-compose:

tested on v1.24.0

OS environment:

MacOS (Nix)

Steps or code to reproduce the issue:

• Set PC_HIDE_DISABLED_PROC=1
• Start a single (or subset) of processes

Expected result:

I would expect that if a single process is started, that process is selected and the logs of it are shown. Or if multiple are started the first enabled process is selected

Actual result:

The first existing process is selected, even if disabled. (verified by showing all processes, it's the top one that's selected)