Describe the bug

Program started by "start" command does not have environment set by nushell.

How to reproduce

D:\code\start-env〉let-env MY_VAR = 'value'  
D:\code\start-env〉start a.my_extension 

2. In popup, select assosiated application (see below)
3. Observe output:
   no var

Expected behavior

D:\code\start-env〉let-env MY_VAR = 'value'
D:\code\start-env〉start a.my_extension 

2. In popup, select assosiated application (see below)
3. Observe output:
   var was: value

Screenshots

No response

Configuration

D:\code\start-env〉version | transpose key value | to md --pretty 03/21/2023 04:14:12 PM

Additional context

Simple rust program reading environment:

use std::env;
use std::io;
use std::io::prelude::*;

fn main() {

    match env::var("MY_VAR") {
        Ok(var) => println!("var was: {}", var),
        Err(_) => println!("no var"),
    }

    let stdin = io::stdin();
    for line in stdin.lock().lines() {
        println!("echo {}", line.unwrap());
    }
}

Environment was passed correctly in nushell 0.72. I encountered the bug when upgraded to 0.77, not sure which intermediate version is to blame.

Additionally, one can run following in cmd to observe correct behavior:

D:\code\start-env>set MY_VAR=value

D:\code\start-env>a.my_extension
var was: value