Nushell locks the history file

Basic Info

Platform
Linux, Ubuntu 20.04

Terminal software
Windows Terminal

Nushell attempts to lock the history file. This means that nushell doesn't work when your home directory is mounted via a remote filesystem that doesn't support file locking, like NFSv3. I would think this could potentially cause issue with multiple instances of nushell via the same user as well.

Steps to reproduce

1. Ensure your history file is on a non-locking filesystem, like NFSv3. Either by remotely mounting your home directory, or changing the file location
2. run nushell. It will freeze while attempting to lock the file before exiting with an error.

strace

open("/home/net/$user/.config/nushell/history.txt", O_RDWR|O_CREAT|O_CLOEXEC, 0666) = 5
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
flock(5, LOCK_EX)                       = -1 EIO (Input/output error)
close(5)                                = 0
ioctl(1, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(2, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(2, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(2, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(2, TIOCGWINSZ, {ws_row=30, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
write(2, "Error: ", 7Error: )                  = 7
write(2, "\n", 1
)                       = 1
write(2, "  \33[31m\303\227\33[0m I/O error (os erro"..., 36  × I/O error (os error 5)) = 36
write(2, "\n", 1
)                       = 1
write(2, "\n", 1
)                       = 1
sigaltstack({ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=8192}, NULL) = 0
munmap(0x7f4376073000, 12288)           = 0
exit_group(1)                           = ?
+++ exited with 1 +++

Start by tracing reedline's history-file handling from the reported startup path and reproduce the failure on an NFSv3-like non-locking filesystem. Done means Nushell no longer exits with an I/O error when the history file cannot be locked, while the reported history behavior remains clear.