chore: Fix several style lints (#17488)

It's not comprehensive enough to start linting on `style` group, but
hey, it's a start.

Release Notes:

- N/A

crates/inline_completion_button/src/inline_completion_button.rs

@@ -53,7 +53,7 @@ impl Render for InlineCompletionButton {
         let all_language_settings = all_language_settings(None, cx);
 
         match all_language_settings.inline_completions.provider {
-            InlineCompletionProvider::None => return div(),
+            InlineCompletionProvider::None => div(),
 
             InlineCompletionProvider::Copilot => {
                 let Some(copilot) = Copilot::global(cx) else {