Workaround for gap-system#4854

This disables an attempt to use cyclic extension instead of lifting for
lattices of smallish groups. The issue is that CE returns data in a slightly
different format than required.
If yomlib is loded its a mote issue, and thus does not merit investigation.

This closes gap-system#4854

lib/grplatt.gi

@@ -845,11 +845,11 @@ InstallGlobalFunction(LatticeViaRadical,function(arg)
   makesubgroupclasses,cefastersize;
 
   #group order below which cyclic extension is usually faster
-  if IsPackageMarkedForLoading("tomlib","")=true then
+  #if IsPackageMarkedForLoading("tomlib","")=true then
     cefastersize:=1; 
-  else
-    cefastersize:=40000; 
-  fi;
+  #else
+  #  cefastersize:=40000; 
+  #fi;
 
   makesubgroupclasses:=function(g,l)
   local i,m,c;