Refactored Command to add owner

src/myfasthtml/controls/TabsManager.py

@@ -60,6 +60,7 @@ class Commands(BaseCommands):
   def show_tab(self, tab_id):
     return Command(f"{self._prefix}ShowTab",
                    "Activate or show a specific tab",
+                   self._owner,
                    self._owner.show_tab,
                    tab_id,
                    True,
@@ -68,12 +69,14 @@ class Commands(BaseCommands):
   def close_tab(self, tab_id):
     return Command(f"{self._prefix}CloseTab",
                    "Close a specific tab",
+                   self._owner,
                    self._owner.close_tab,
                    tab_id).htmx(target=f"#{self._id}-controller", swap="outerHTML")
   
   def add_tab(self, label: str, component: Any, auto_increment=False):
     return Command(f"{self._prefix}AddTab",
                    "Add a new tab",
+                   self._owner,
                    self._owner.on_new_tab,
                    label,
                    component,