boxForTable
Converts a stack long value to an int suitable for table storage. i31 values (tagged longs) are boxed as WasmI31Ref GC refs so the tag is preserved. For non-GC values (funcref, externref), this is a no-op cast to int.
Converts a stack long value to an int suitable for table storage. i31 values (tagged longs) are boxed as WasmI31Ref GC refs so the tag is preserved. For non-GC values (funcref, externref), this is a no-op cast to int.