bpo-40219: Lowered ttk LabeledScale dummy (GH-21467)

diff --git a/Lib/tkinter/ttk.py b/Lib/tkinter/ttk.py
index 968fd54..f3a2f76 100644
--- a/Lib/tkinter/ttk.py
+++ b/Lib/tkinter/ttk.py
@@ -1538,7 +1538,10 @@ def __init__(self, master=None, variable=None, from_=0, to=10, **kw):
         scale_side = 'bottom' if self._label_top else 'top'
         label_side = 'top' if scale_side == 'bottom' else 'bottom'
         self.scale.pack(side=scale_side, fill='x')
-        tmp = Label(self).pack(side=label_side) # place holder
+        # Dummy required to make frame correct height
+        dummy = Label(self)
+        dummy.pack(side=label_side)
+        dummy.lower()
         self.label.place(anchor='n' if label_side == 'top' else 's')
 
         # update the label as scale or variable changes