/dev/std* don't work with podmans --userns=auto

[M1cha]

crun had the same bug and it's about to be fixed.
I'm not using runc personally but a quick test showed that it's affected too:

$ podman run --runtime runc --rm --userns=auto:size=65534 busybox /bin/stat -L /proc/1/fd/1
  File: /proc/1/fd/1
  Size: 0               Blocks: 0          IO Block: 4096   fifo
Device: dh/13d  Inode: 6130010     Links: 1
Access: (0600/prw-------)  Uid: (65534/  nobody)   Gid: (65534/  nobody)
Access: 2022-10-04 08:52:57.891243391 +0000
Modify: 2022-10-04 08:52:57.891243391 +0000
Change: 2022-10-04 08:52:57.891243391 +0000

$ podman run --runtime runc --rm --userns=auto:size=65534 busybox /bin/sh -c 'echo hello >> /dev/stdout'
/bin/sh: can't create /dev/stdout: Permission denied