sage.misc.latex: Replace have_... functions by Features #32650
Description
... or more generally, replacing all uses of sage.misc.os_tools.have_program by Executable
Depends on #32634
CC: @kwankyu
Component: refactoring
Author: Sébastien Labbé
Branch: 2ea4d9e
Reviewer: Matthias Koeppe
Issue created by migration from https://trac.sagemath.org/ticket/32650