tun.c: set IPv4 address temporary on Windows

tun.c: set IPv4 address temporary on Windows

Use store=active to set IPv4 address temporary so that
it will be removed on reboot. This makes the behavior
consistent with deletion and IPv6, where we already use
store=active.

https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/netsh-interface

GitHub: fixes OpenVPN/openvpn#915

Change-Id: I07311f397e6cd278b90c33f024e927c282cd03e4
Signed-off-by: Lev Stipakov <lev@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1430
Message-Id: <20251210075906.27693-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg34975.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>