In 1949, the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) defined Palestinian refugees to refer to the original "Palestine refugees" as well as their patrilineal descendants.
https://en.wikipedia.org/wiki/Palestinian_refugee
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Palestinians in Jordan refers mainly to those with Palestinian refugee status currently residing there. Sometimes the definition includes Jordanian citizens with full Palestinian origin. Most Palestinian ancestors came to Jordan as Palestinian refugees between 1947 and 1967.Today, most Palestinians and their descendants in Jordan are naturalized, making Jordan the only Arab country to fully integrate the Palestinian refugees of 1948, as the West Bank was annexed and held by Jordan between 1948 and 1967
https://en.wikipedia.org/wiki/Palestinians_in_Jordan
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Supermodel Gigi Hadid (born in Los Angeles) holds inherited "Palestinian refugee" status through her father, multi-millionaire real estate developer Mohamed Hadid. Mohamad Hadid holds dual citizenship in the United States and Jordan and lives in Israel.
Supermodel Gigi Hadi's child is not a "Palestinian refugee".
That status is only heritable through the male line.