Multiple local system sites cannot accept yaml without ns specification

[pwright]

Describe the bug

I start a podman site and: cp token.yaml ~/.local/share/skupper/namespaces/default/input/resources/ skupper system setup --force

I start a linux site and: cp token.yaml ~/.local/share/skupper/namespaces/linux/input/resources/ skupper system setup --force -n linux

Sources will be consumed from namespace "linux"
Failed to bootstrap: failed to load site state: multiple namespaces found, but only a unique namespace must be used across all resources - namespaces found: [default linux]

How To Reproduce Steps to reproduce the behavior:

Expected behavior

Should not require specifying ns, but maybe error msg could be clearer:

Failed to bootstrap: failed to load site state: multiple namespaces found, but a unique namespace must be specified - namespaces found: [default linux]

Environment details

• Skupper CLI: 2.0
• Skupper Operator (if applicable): [e.g. 1.5.0, 1.4.3]
• Platform: Podman Linux

Additional context Add any other context about the problem here.