EF table-per-hierarchy multiple constructors

Question

I have an inherited class configuration that is using TPH and has created a single table with a discriminator column, and some of my own nullable fields

public abstract class ActionBase
{
    /// ctor1
    public ActionBase(long issueId)
    {
        IssueId = issueId;
        Url = $"https://mypath.com/{issueId}";
    }

    /// ctor2
    public ActionBase(long issueId, long locationId)
    {
        IssueId = issueId;
        LocationId = locationId;
        Url = $"https://mypath.com/{issueId}/{locationId}";
    }

    public long IssueId {get;set;}
    public long? LocationId {get;set;}
    public Url { get; }
}

public class BlogAction: ActionBase
{        
    /// ctor1
    public ReadBlogAction(long issueId): base(issueId) {}
}

public class LocationAction: ActionBase
{        
    /// ctor1
    public ReadBlogAction(long issueId, long locationId): base(issueId, locationId) {}
}

public class BlogLocationAction: ActionBase
{        
    /// ctor1
    public ReadBlogAction(long issueId): base(issueId) {}

    /// ctor2
    public ReadBlogAction(long issueId, long locationId): base(issueId, locationId) {}
}

When I create instances of the BlogLocationAction class the first constructor is always run. How can I require the 2nd constructor to be used if LocationId is not null?