Prevent the initial Changed event when initial value is True

src/textual/widgets/_toggle_button.py

@@ -132,7 +132,14 @@ class ToggleButton(Static, can_focus=True):
         """
         super().__init__(name=name, id=id, classes=classes, disabled=disabled)
         self._button_first = button_first
-        self.value = value
+        # WORKAROUND: I would `self.value = value` here but I don't want the
+        # Changed event to fire off on the way in. I only want `Changed`
+        # when it has *changed*, not when it's been set to the initial value
+        # the user wants. This can be properly fixed if the `prevent`
+        # context manager can be done.
+        self._reactive_value = value
+        # WORKAROUND: See above. This needs to be here for now too.
+        self.set_class(self.value, "-on")
         self._label = Text.from_markup(label) if isinstance(label, str) else label
         try:
             # Only use the first line if it's a multi-line label.