Upgrade the Rust toolchain to 1.99.1 (#55677)

## What changed

- Update Cargo and Bazel toolchain pins, CI and release workflows, and Windows setup from Rust `1.95.0` to `1.99.1`.
- Adapt Rust code to updated APIs and lint requirements, including `try_update` and `as_chunks`, and refresh the halfwidth sound marks snapshot.
- Update `webpki-root-certs` from `1.0.5` to `1.0.10` in the Cargo and Bazel lockfiles.

GitOrigin-RevId: e1aaed63b7e72bb8c8bbe25b32c6329c9a37b6c3

codex-rs/shell-command/src/bash.rs

@@ -88,11 +88,8 @@ pub fn try_parse_word_only_commands_sequence(tree: &Tree, src: &str) -> Option<V
 
     let mut commands = Vec::new();
     for node in command_nodes {
-        if let Some(words) = parse_plain_command_from_node(node, src) {
-            commands.push(words);
-        } else {
-            return None;
-        }
+        let words = parse_plain_command_from_node(node, src)?;
+        commands.push(words);
     }
     Some(commands)
 }