fix: preserve short-circuit when && or || RHS needs setup

[ivov]

Fix && and || evaluating the RHS even when the LHS already decided the result, in cases where the RHS needs setup statements, such as a Result returning call followed by .is_ok(). Previously the emitter hoisted that setup before the operator, defeating Go's native short-circuit; now the RHS setup is wrapped in an IIFE so it runs only when control reaches the RHS.

import "go:fmt"

fn check() -> Result<int, error> {
  fmt.Println("right side ran")
  Ok(1)
}

fn main() {
  if false && check().is_ok() {
    fmt.Println("body")
  }
}

Before this change the program printed right side ran. Now it prints nothing.

[github-actions]

Released in lisette-v0.2.1