UPSTREAM PR #17425: feat: add support for custom history file path in config

[loci-dev]

Note

Source pull request: nushell/nushell#17425

Closes #17419

The PR adds support for configuring a custom history file path via $env.config.history.path in config.nu

We allow users to redirect history to /dev/null or any custom location, which is particularly useful for TTY login scenarios where the --no-history flag cannot be used

$env.config.history.path = "/dev/null"  # disable history
$env.config.history.path = "~/custom/history.txt"  # custom location

I checked:

• builds successfully with cargo build --release
• run toolkit check pr successfully
• manual testing: Setting $env.config.history.path = "/dev/null" prevents history file creation
• manual testing: Custom path works correctly