ST6RI-759: Feature chains referring to features that do not belong to the owning features are not correctly rendered (PlantUML)

[himi]

So far, the visualizer wrongly assumed feature chains refer to features directly or indirectly owned by the owning feature of the feature chains. Therefore, the example below was incorrectly rendered:

action a1 {
    first a3.a31 then a11;
    action a11;
}

action a3 {
    action a31;
}

as

[himi]

After this fix, it is correctly rendered:

[himi]

It can correctly handle more tricky case:

    action a1 {
        first a5.a31 then a11;
        action a11;
        then a3.a31.a311;
    }

    action a2 {
        action a21;
    }

    action a3 :> a2 {
        action a31 {
            action a311;
        }
    }

    action a4 :> a3 {
        first a21 then a41;
        action a41;
    }

    action a5 :> a3;

It is rendered as:

[himi]

This PR also fixes the issue incorrectly handling feature values using feature chains. So the example below

part p0 {
    attribute a1 = 10;
}

attribute a0 = 100;

part p2 {
    attribute a2 = p0.a1;
    attribute a3 = a0;
}

is correctly rendered as:

in interconnection view.

[himi]

This PR fixes the issue reported in https://github.com/Systems-Modeling/SysML-v2-Pilot-Implementation/pull/548#issuecomment-2002110381