Another batch of lint fixes (#36521)

- **Enable a bunch of extra lints**
- **First batch of fixes**
- **More fixes**

Release Notes:

- N/A

crates/debugger_ui/src/session/running.rs

@@ -358,7 +358,7 @@ pub(crate) fn new_debugger_pane(
         }
     };
 
-    let ret = cx.new(move |cx| {
+    cx.new(move |cx| {
         let mut pane = Pane::new(
             workspace.clone(),
             project.clone(),
@@ -562,9 +562,7 @@ pub(crate) fn new_debugger_pane(
             }
         });
         pane
-    });
-
-    ret
+    })
 }
 
 pub struct DebugTerminal {