Missing newline in "dune exec" #6700
Description
Expected Behavior
dune exec should show the program's output starting on a new line, but instead it appears after the build status. It used to work correctly in dune 3.5.0.
Reproduction
$ dune init project test
$ cd test
$ dune exec -- ./bin/main.exe
Done: 92% (12/13, 1 left) (jobs: 1)Hello, World!
Specifications
$ dune --version
3.6.1
$ ocamlc --version
5.0.0~rc1
$ cat /etc/debian_version
11.5