Add an option to disable `realpath` when creating venv

[seven1oe]

These two lines of code sometimes make the executable path point somewhere unexpected:

cpython/Lib/venv/__init__.py

Line 210 in 8b5ce31

real_env_exe = os.path.realpath(context.env_exe)

cpython/Lib/venv/__init__.py

Line 240 in 8b5ce31

f.write('executable = %s\n' % os.path.realpath(sys.executable))

Based on the following issue, realpath is necessary in some cases. However, there are situations where using "redirects, links or junctions" is intentional! For example, using subst to change drive letters or path for venv.
#89500

Would it be possible to add an option to disable the use of realpath during venv creation?