link.Elf: truncate st_other to u3 before converting to std.elf.STV
See 6b6e336e07308fd23f3061b5be11407956b2a460 for context, but note that in
gABI 4.3, 3 bits are reserved for the visibility, up from the previous 2.
210b764c03Alex Rønne Petersen committed on 9/3/2025, 11:16:27 PMparenta82f446