The ecma_enqueue_promise_reaction_job() function allocates memory,
which might trigger a GC run. During this GC the objects in the
reactions collection are not marked.
Fixes#2486.
Fixes#2506.
Fixes#2541.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com