fix: missing docker while podman is configured

[a-oren]

Description

Previously, dockerPodmanInfo used a short-circuit OR (||) to choose between docker and podman suppliers. If the docker supplier threw an error (e.g. docker binary not found), the exception propagated and podman was never tried- even when podman was installed and configured. Wrap the docker supplier call in a try/catch so that when docker is
unavailable, execution falls through to the podman supplier instead of failing the entire analysis.

Also fix getSyftEnvs to use delimiter from node:path instead of
the non-existent File.pathSeparator.

Related issues (if any):

• fixes: #issue_number_goes_here

Checklist

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Additional information

Anything else?