restore cursor shape when exits (#9314)

# Description
This PR restores cursor shape when nushell exists.

Fixes #9243 

Related
[nushell/reedline#574](nushell/reedline#574)

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

* windows


https://github.com/nushell/nushell/assets/15247421/ede8d1c0-ecd1-40b0-87b0-6393c1a7160f


* linux


https://github.com/nushell/nushell/assets/15247421/b428f17e-05cb-45ad-aa5f-3a9753fd9176

* macos


https://github.com/nushell/nushell/assets/15247421/5170dabd-8b9f-4bad-a7a2-bdabfca45cca

# Tests + Formatting
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crates/nu-cli/src/repl.rs

@@ -12,7 +12,7 @@ use nu_color_config::StyleComputer;
 use nu_command::hook::eval_hook;
 use nu_command::util::get_guaranteed_cwd;
 use nu_engine::convert_env_values;
-use nu_parser::{lex, trim_quotes_str};
+use nu_parser::{lex, parse, trim_quotes_str};
 use nu_protocol::{
     config::NuCursorShape,
     engine::{EngineState, Stack, StateWorkingSet},
@@ -591,6 +591,27 @@ pub fn evaluate_repl(
                 } else if !s.trim().is_empty() {
                     trace!("eval source: {}", s);
 
+                    let mut cmds = s.split_whitespace();
+                    if let Some("exit") = cmds.next() {
+                        let mut working_set = StateWorkingSet::new(engine_state);
+                        let _ = parse(&mut working_set, None, s.as_bytes(), false);
+
+                        if working_set.parse_errors.is_empty() {
+                            match cmds.next() {
+                                Some(s) => {
+                                    if let Ok(n) = s.parse::<i32>() {
+                                        drop(line_editor);
+                                        std::process::exit(n);
+                                    }
+                                }
+                                None => {
+                                    drop(line_editor);
+                                    std::process::exit(0);
+                                }
+                            }
+                        }
+                    }
+
                     eval_source(
                         engine_state,
                         stack,