Conditionally display debugger panel icon based on a setting (#45544)

Closes [#ISSUE](https://github.com/zed-industries/zed/issues/45506)

Release Notes:

- Conditionally display the debugger panel icon based on a setting to
avoid too many error logs

crates/debugger_ui/src/debugger_panel.rs

@@ -1579,8 +1579,10 @@ impl Panel for DebugPanel {
         Some(proto::PanelId::DebugPanel)
     }
 
-    fn icon(&self, _window: &Window, _cx: &App) -> Option<IconName> {
-        Some(IconName::Debug)
+    fn icon(&self, _window: &Window, cx: &App) -> Option<IconName> {
+        DebuggerSettings::get_global(cx)
+            .button
+            .then_some(IconName::Debug)
     }
 
     fn icon_tooltip(&self, _window: &Window, cx: &App) -> Option<&'static str> {