Was Aragorns's son the next heir of Gondor?

[Armetiel]

^nor did Arwen, Elrond was only half-elven same as Elros would have been technically half-mankind i guess since Elrond and Elros were brothers, but they didn't have kids until after they chose what they wanted to be, and they married of the same race that they had chosen to be...so if Elros kids had had the choice Arwen and her brothers would have too i think...but they didn't and nor would Arwen's children