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/eval/src/assertions.rs

@@ -54,7 +54,7 @@ impl AssertionsReport {
     pub fn passed_count(&self) -> usize {
         self.ran
             .iter()
-            .filter(|a| a.result.as_ref().map_or(false, |result| result.passed))
+            .filter(|a| a.result.as_ref().is_ok_and(|result| result.passed))
             .count()
     }
 

crates/eval/src/eval.rs

@@ -112,7 +112,7 @@ fn main() {
         let telemetry = app_state.client.telemetry();
         telemetry.start(system_id, installation_id, session_id, cx);
 
-        let enable_telemetry = env::var("ZED_EVAL_TELEMETRY").map_or(false, |value| value == "1")
+        let enable_telemetry = env::var("ZED_EVAL_TELEMETRY").is_ok_and(|value| value == "1")
             && telemetry.has_checksum_seed();
         if enable_telemetry {
             println!("Telemetry enabled");

crates/eval/src/examples/add_arg_to_trait_method.rs

@@ -70,10 +70,10 @@ impl Example for AddArgToTraitMethod {
             let path_str = format!("crates/assistant_tools/src/{}.rs", tool_name);
             let edits = edits.get(Path::new(&path_str));
 
-            let ignored = edits.map_or(false, |edits| {
+            let ignored = edits.is_some_and(|edits| {
                 edits.has_added_line("        _window: Option<gpui::AnyWindowHandle>,\n")
             });
-            let uningored = edits.map_or(false, |edits| {
+            let uningored = edits.is_some_and(|edits| {
                 edits.has_added_line("        window: Option<gpui::AnyWindowHandle>,\n")
             });
 
@@ -89,7 +89,7 @@ impl Example for AddArgToTraitMethod {
         let batch_tool_edits = edits.get(Path::new("crates/assistant_tools/src/batch_tool.rs"));
 
         cx.assert(
-            batch_tool_edits.map_or(false, |edits| {
+            batch_tool_edits.is_some_and(|edits| {
                 edits.has_added_line("        window: Option<gpui::AnyWindowHandle>,\n")
             }),
             "Argument:   batch_tool",