Block decomposition: fix simulation of blocks of type "evaluate backward" (without bytecode)

Ref. #1727

(manually cherry-picked from cf523cb6)
9 jobs for 4.6 in 342 minutes and 46 seconds (queued for 26 seconds)
Status Job ID Name Coverage
  Build
passed #18344
build_binaries

00:10:50

passed #18345
build_doc

00:01:32

 
  Test And Pkg
passed #18348
macOS
pkg_macOS

00:13:00

passed #18346
pkg_source

00:01:29

passed #18347
pkg_windows

00:23:41

passed #18352
test_dynare++

00:11:33

passed #18349
test_matlab

00:51:26

passed #18351
test_octave

04:51:09

passed #18350
test_old_matlab

01:09:53