Fix a bunch of other low-hanging style lints (#36498)

- **Fix a bunch of low hanging style lints like unnecessary-return**
- **Fix single worktree violation**
- **And the rest**

Release Notes:

- N/A

crates/language_models/src/provider/anthropic.rs

@@ -554,7 +554,7 @@ pub fn into_anthropic(
                     .into_iter()
                     .filter_map(|content| match content {
                         MessageContent::Text(text) => {
-                            let text = if text.chars().last().map_or(false, |c| c.is_whitespace()) {
+                            let text = if text.chars().last().is_some_and(|c| c.is_whitespace()) {
                                 text.trim_end().to_string()
                             } else {
                                 text
@@ -813,7 +813,7 @@ impl AnthropicEventMapper {
                             ))];
                         }
                     }
-                    return vec![];
+                    vec![]
                 }
             },
             Event::ContentBlockStop { index } => {

crates/language_models/src/provider/cloud.rs

@@ -270,7 +270,7 @@ impl State {
         if response.status().is_success() {
             let mut body = String::new();
             response.body_mut().read_to_string(&mut body).await?;
-            return Ok(serde_json::from_str(&body)?);
+            Ok(serde_json::from_str(&body)?)
         } else {
             let mut body = String::new();
             response.body_mut().read_to_string(&mut body).await?;

crates/language_models/src/provider/google.rs

@@ -530,7 +530,7 @@ pub fn into_google(
     let system_instructions = if request
         .messages
         .first()
-        .map_or(false, |msg| matches!(msg.role, Role::System))
+        .is_some_and(|msg| matches!(msg.role, Role::System))
     {
         let message = request.messages.remove(0);
         Some(SystemInstruction {