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/project/src/debugger/locators/cargo.rs

@@ -146,7 +146,7 @@ impl DapLocator for CargoLocator {
         let is_test = build_config
             .args
             .first()
-            .map_or(false, |arg| arg == "test" || arg == "t");
+            .is_some_and(|arg| arg == "test" || arg == "t");
 
         let executables = output
             .lines()

crates/project/src/debugger/locators/python.rs

@@ -28,9 +28,7 @@ impl DapLocator for PythonLocator {
         let valid_program = build_config.command.starts_with("$ZED_")
             || Path::new(&build_config.command)
                 .file_name()
-                .map_or(false, |name| {
-                    name.to_str().is_some_and(|path| path.starts_with("python"))
-                });
+                .is_some_and(|name| name.to_str().is_some_and(|path| path.starts_with("python")));
         if !valid_program || build_config.args.iter().any(|arg| arg == "-c") {
             // We cannot debug selections.
             return None;

crates/project/src/debugger/memory.rs

@@ -329,7 +329,7 @@ impl Iterator for MemoryIterator {
         }
         if !self.fetch_next_page() {
             self.start += 1;
-            return Some(MemoryCell(None));
+            Some(MemoryCell(None))
         } else {
             self.next()
         }

crates/project/src/debugger/session.rs

@@ -431,7 +431,7 @@ impl RunningMode {
         let should_send_exception_breakpoints = capabilities
             .exception_breakpoint_filters
             .as_ref()
-            .map_or(false, |filters| !filters.is_empty())
+            .is_some_and(|filters| !filters.is_empty())
             || !configuration_done_supported;
         let supports_exception_filters = capabilities
             .supports_exception_filter_options
@@ -710,9 +710,7 @@ where
     T: LocalDapCommand + PartialEq + Eq + Hash,
 {
     fn dyn_eq(&self, rhs: &dyn CacheableCommand) -> bool {
-        (rhs as &dyn Any)
-            .downcast_ref::<Self>()
-            .map_or(false, |rhs| self == rhs)
+        (rhs as &dyn Any).downcast_ref::<Self>() == Some(self)
     }
 
     fn dyn_hash(&self, mut hasher: &mut dyn Hasher) {
@@ -1085,7 +1083,7 @@ impl Session {
         })
         .detach();
 
-        return tx;
+        tx
     }
 
     pub fn is_started(&self) -> bool {