Problem: i_CTRL-R- no longer works in replace mode
Solution: delete characters in replace mode before putting, add a test,
add a bit warning into the documentation, that i_CTRL-R-P/O
is not supported in Replace mode for now
fixes: vim/vim#13792closes: vim/vim#138165d5cbb2b9a
Co-authored-by: Christian Brabandt <cb@256bit.org>