padding property
Padding around the title row.
Accepts any EdgeInsetsGeometry — pass EdgeInsetsDirectional for
correct RTL mirroring (e.g. EdgeInsetsDirectional.only(start: 32)).
Defaults to EdgeInsetsDirectional.fromSTEB(24, 0, 24, 8), matching
the iOS 26 large-title insets (start=24, end=24, bottom=8).
Implementation
final EdgeInsetsGeometry padding;