polymake interface: Get rid of terminal echo

[mkoeppe]

As first discussed in #22658 comment 14 and later,
getting rid of terminal echo using stty -echo (and adjusting the interface to work even if there's no echo...) could make the polymake interface more efficient and more robust.

CC: @simon-king-jena

Component: interfaces: optional

Issue created by migration from https://trac.sagemath.org/ticket/22721

[mkoeppe]

comment:2

Outdated - the pexpect interface has been replaced by the jupymake interface