Mosh appears to drop extra environment variables

[rrgeorge]

Checklist

• Using latest version on the App Store
  (TestFlight 17.2.1.865)
• Read the docs
• Searched for existing GitHub issues

Configuration

Blink 17.2.1.865
iOS 17.2.1

Describe the bug

Sending a custom environment variable (via SendEnv) (such as LC_DEVICE) is lost when connecting over mosh.
The variable is successfully set over SSH.
Steps to reproduce:

1. Set SendEnv in .ssh/config (or host SSH config):

SendEnv LC_DEVICE

2. Set env in host .blink/profile:

LC_DEVICE=test

3. Confirm its set:

blink> echo $LC_DEVICE
test

4. Confirm its set over ssh:

blink> ssh host
$ echo $LC_DEVICE
test

4. Try over mosh:

blink> mosh host
$ echo $LC_DEVICE

no output

Expected behavior

For SendEnv variables to behave the same over mosh as they do on ssh