Remove escape of 0x9b.

The replacement of the 0x9b replaces some legal UTF-8 characters with '?'. For example

$ nano -w Ложка &
$ ps aux | grep nano
me+   10902  0.0  0.0   7380  3652 pts/0    T    19:44   0:00 nano -w ?ожка
me+   10916  0.0  0.0   6324  2260 pts/0    S+   19:44   0:00 grep --color=auto nano

https://gitlab.com/procps-ng/procps/-/blob/master/proc/escape.c#L103

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Also, the same for example for COMBINING ACUTE ACCENT,

LÓR  -> LO?R

Is it called "Unicode support"?