fix: use direct lookup context for pk;member <name> groups

PluralKit.Bot/Commands/GroupMember.cs

@@ -60,7 +60,7 @@ public class GroupMember
 
     public async Task ListMemberGroups(Context ctx, PKMember target)
     {
-        var pctx = ctx.LookupContextFor(target.System);
+        var pctx = ctx.DirectLookupContextFor(target.System);
 
         var groups = await _repo.GetMemberGroups(target.Id)
             .Where(g => g.Visibility.CanAccess(pctx))

PluralKit.Bot/Commands/Groups.cs

@@ -433,6 +433,8 @@ public class Groups
 
         // TODO: integrate with the normal "search" system
 
+        // TODO: integrate with privacy config settings
+
         var pctx = LookupContext.ByNonOwner;
         if (ctx.MatchFlag("a", "all"))
         {