Fix S3900: FN FlowCapture

[Tim-Pohlmann]

Part of #6997

public class Test
{
    public void Configure(string typeMap)
    {
        _ = ((string)typeMap).CompareTo(Condition ? "a" : "b"); // FN
    }
    bool Condition;
}

Example from #6997:

public void Configure(TypeMap typeMap)
{
    var destMember = DestinationMember;

    if(destMember.DeclaringType.ContainsGenericParameters)
    {
        destMember = typeMap.DestinationSetters.Single(m => m.Name == destMember.Name);
    }

    var propertyMap = typeMap.FindOrCreatePropertyMapFor(destMember, typeof(TMember) == typeof(object) ? destMember.GetMemberType() : typeof(TMember));

    Apply(propertyMap);
}

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[Tim-Pohlmann]

Closed due to an issue in the LVA creating FPs. If it gets fixed, it might be worthwhile to revisit this PR.

[Tim-Pohlmann]

Deleting the branch. There is a new method ProgramState.ResolveCaptureAndUnwrapConversion that can be used if needed.