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/edit_prediction_button/src/edit_prediction_button.rs

@@ -185,7 +185,7 @@ impl Render for EditPredictionButton {
                 let this = cx.entity();
                 let fs = self.fs.clone();
 
-                return div().child(
+                div().child(
                     PopoverMenu::new("supermaven")
                         .menu(move |window, cx| match &status {
                             SupermavenButtonStatus::NeedsActivation(activate_url) => {
@@ -230,7 +230,7 @@ impl Render for EditPredictionButton {
                             },
                         )
                         .with_handle(self.popover_menu_handle.clone()),
-                );
+                )
             }
 
             EditPredictionProvider::Zed => {
@@ -343,7 +343,7 @@ impl Render for EditPredictionButton {
                 let is_refreshing = self
                     .edit_prediction_provider
                     .as_ref()
-                    .map_or(false, |provider| provider.is_refreshing(cx));
+                    .is_some_and(|provider| provider.is_refreshing(cx));
 
                 if is_refreshing {
                     popover_menu = popover_menu.trigger(