Orbit() of a matrix group on sets of vectors stopped working in GAP 4.13

[dimpase]

Observed behaviour

with GAP 4.13.0 or .1, the following stopped working

gap>   gg:=SpecialUnitaryGroup(4,2);
SU(4,2)
gap>    hl:=Z(2)*[
>                 [0,0,1,0],
>                 [1,1,0,0],
>                 [0,1,0,1],
>                 [0,1,1,0],
>                 [1,1,0,1]];
[ [ 0*Z(2), 0*Z(2), Z(2)^0, 0*Z(2) ], [ Z(2)^0, Z(2)^0, 0*Z(2), 0*Z(2) ], [ 0*Z(2), Z(2)^0, 0*Z(2), Z(2)^0 ], [ 0*Z(2), Z(2)^0, Z(2)^0, 0*Z(2) ], [ Z(2)^0, Z(2)^0, 0*Z(2), Z(2)^0 ] ]
gap>        o216:=Orbit(gg,Set(hl),OnSets);
Error, no method found! For debugging hints type ?Recovery from NoMethodFound
Error, no 1st choice method found for `+' on 2 arguments
The 2nd argument is 'fail' which might point to an earlier problem
 at /mnt/opt/gap/lib/methsel2.g:250 called from
pow * gsy + fct( i ) at /mnt/opt/gap/lib/dicthf.gi:184 called from
hash!.intKeyFun( key ) at /mnt/opt/gap/lib/dict.gi:897 called from
LookupDictionary( ht, x ) at /mnt/opt/gap/lib/dict.gi:886 called from
KnowsDictionary( d, i ) at /mnt/opt/gap/lib/oprt.gi:1024 called from
orbish( G, pnt, gens, acts, act ) at /mnt/opt/gap/lib/oprt.gd:858 called from
...  at *stdin*:8
type 'quit;' to quit to outer loop

Expected behaviour

Orbit gets created (the above commands work with GAP 4.12.2 and earlier)

Copy and paste GAP banner (to tell us about your setup)

 ┌───────┐   GAP 4.13.1 of 2024-06-11
 │  GAP  │   https://www.gap-system.org
 └───────┘   Architecture: amd64
 Configuration:  gmp 6.3.0, GASMAN, readline
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 Packages:   Alnuth 3.2.1, AtlasRep 2.1.8, AutPGrp 1.11, CRISP 1.4.6, CTblLib 1.3.9, FactInt 1.6.3, FGA 1.5.0, GAPDoc 1.6.7, IO 4.8.2, IRREDSOL 1.4.4, LAGUNA 3.9.6, Polenta 1.3.10, Polycyclic 2.16, PrimGrp 3.4.4, RadiRoot 2.9, 
             ResClasses 4.7.3, SmallGrp 1.5.3, Sophus 1.27, TomLib 1.2.11, TransGrp 3.6.5, utils 0.84
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[dimpase]

we are using this idiom in several places in SageMath, and while cooking up a workaround should be easy, it'd be nice to have it fixed