[3.13] gh-125378: Trigger a repeat for the full multi-line statement for empty line command (GH-125717) (#125736)

gh-125378: Trigger a repeat for the full multi-line statement for empty line command (GH-125717)
(cherry picked from commit 8f5e39d5c885318e3128a3e84464c098b5f79a79)

Co-authored-by: Tian Gao <gaogaotiantian@hotmail.com>