fix(bar): 修复点击 workspace 末尾 layout 单元无法切换布局的 bug

src/bar/workspaces.c

@@ -150,8 +150,14 @@ static zdwm_action_t bar_workspace_on_click(
   void *state
 ) {
   auto data = (bar_workspace_state_t *)state;
-  auto workspace = &data->workspaces[cell_index];
+  if (cell_index == data->count) {
+    return (zdwm_action_t){
+      .type            = ZDWM_ACTION_LAYOUT_CYCLE,
+      .as.layout_cycle = {.delta = 1},
+    };
+  }
 
+  auto workspace = &data->workspaces[cell_index];
   if (workspace->info.id == data->workspace_id) {
     return (zdwm_action_t){.type = ZDWM_ACTION_NONE};
   }