adjust classic option edit height

Author: williamchange

material_maker/theme/classic_base.tres

@@ -1261,6 +1261,7 @@ MM_NodeGradientEditPopup/base_type = &"PanelContainer"
 MM_NodeGradientEditPopup/styles/panel = SubResource("StyleBoxFlat_omwbs")
 MM_NodeImageEdit/base_type = &"Button"
 MM_NodeOptionEdit/base_type = &"OptionButton"
+MM_NodeOptionEdit/font_sizes/font_size = 12
 MM_NodeOptionEdit/icons/arrow = SubResource("AtlasTexture_bflk3")
 MM_NodeOptionEditPopup/base_type = &"PopupMenu"
 MM_NodeOptionEditPopup/styles/hover = SubResource("StyleBoxFlat_ofcpt")