bug#60244: 27.1; term-line-mode works poorly with git progress rewriting

[Eli Zaretskii]

> Date: Wed, 21 Dec 2022 21:58:40 +0000
> From: "Michael Hoffman" <emacs-hoffman@snkmail.com>
> 
> This line of bash is a better minimum example for this that doesn't require 
> going over the network:
> 
> printf "line %d" 0; for i in {1..500}; do tput cr; printf "line %d" "$i"; done

Funny thing is, "M-x term" does produce the expected results, and I
cannot find what makes "M-x ansi-term" behave differently, as it's
supposed to be almist the same as "M-x term".

Miha, could you perhaps look into this issue?