Set HasBaseDomain filter for matrixobj-with-memory

... at least if the wrapped matrixobj had it set (which really
should always be the case).

This fixes a nasty long-standing issue in genss / orb / recog
where `DefaultScalarDomainOfMatrixList` returned to small a field
when called on a list of matrixobj-with-memory. This then caused
`GroupWithGenerators` to rewrite the generators over a smaller
field, which then lead `genss` to produce (compressed) vectors for
use as base points in the orbit algorithm over the smaller field;
and a matching hash function. When later generators got added that
really needed the larger field, everything exploded in confusing
ways.

lib/memory.gi

@@ -24,6 +24,9 @@ BindGlobal( "ObjWithMemory", function( slp, n, el )
     if IsMatrixObj( el ) then
       filt:= filt and IsMatrixObj;
     fi;
+    if HasBaseDomain( el ) then
+      filt:= filt and HasBaseDomain;
+    fi;
   fi;
 
   return Objectify( NewType( FamilyObj( el ), filt ),

tst/testbugfix/2025-01-17-HasDomain-for-matrix-with-memory.tst

@@ -0,0 +1,8 @@
+gap> G := GroupWithMemory([One(GL(3,4))]);;
+gap> mat := G.1;;
+gap> HasBaseDomain(mat);
+true
+gap> BaseDomain(mat);
+GF(2^2)
+gap> DefaultScalarDomainOfMatrixList([mat]);
+GF(2^2)