Fix group size metadata (#1600)

Co-authored-by: Rajeh Taher <rajeh@reforward.dev>

src/Socket/groups.ts

@@ -325,7 +325,7 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 		subjectOwner: group.attrs.s_o,
 		subjectOwnerJid: group.attrs.s_o_pn,
 		subjectTime: +group.attrs.s_t!,
-		size: getBinaryNodeChildren(group, 'participant').length,
+		size: group.attrs.size ? +group.attrs.size : getBinaryNodeChildren(group, 'participant').length,
 		creation: +group.attrs.creation!,
 		owner: group.attrs.creator ? jidNormalizedUser(group.attrs.creator) : undefined,
 		ownerJid: group.attrs.creator_pn ? jidNormalizedUser(group.attrs.creator_pn) : undefined,