Fix rust build on windows (#2019)

This pull request implements a fix from #2000, as well as fixed an
additional problem with path lengths on windows that prevents the login
from displaying.

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Co-authored-by: Michael Bolin <bolinfest@gmail.com>
Co-authored-by: Michael Bolin <mbolin@openai.com>

codex-rs/login/Cargo.toml

@@ -12,6 +12,7 @@ chrono = { version = "0.4", features = ["serde"] }
 reqwest = { version = "0.12", features = ["json"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
+tempfile = "3"
 thiserror = "2.0.12"
 tokio = { version = "1", features = [
     "io-std",