UnreviewedUnreviewedexpandable: booleanShow a fade hint and chevron over the truncated text and let the user
expand it by clicking the chevron region or pressing Enter while the
chevron has keyboard focus. Only takes effect together with truncate.
On its own, expanding is one-way — the control is removed once
expanded; add collapsible for a two-way toggle.
Optional Unreviewedcollapsible?: booleanLet the reader collapse back after expanding: the chevron becomes a
"Show more" / "Show less" toggle that stays visible while expanded.
Only takes effect together with expandable.
Truncation / expansion axis.
expandableonly takes effect withtruncate;collapsibleonly withexpandable— so the type forbidscollapsibleunlessexpandableis set (a dynamicexpandable={cond}is still allowed).