oddgen "Run test" view under "All Suitepaths": show package icon only for parents of test procedures

[PhilippSalvisberg]

The following tree shows Core and Reporters with a package icon. This is not really wrong, since in fact a package suite annotation exists. However these packages do not have tests (procedures annotated with test). In such cases just folder instead of a package icon should be used.

This change should not affect the behavior of the generator.