Restore advanced settings layout. (#12223)

The new option introduced by #12210 was not located in the "Microsoft UI Automation" option group as it should.
Probably due to missed changes during upmerge of master.

It is now Put in this group as intended by using The static box of the sizer as parent for the checkbox rather than the whole panel.

source/gui/settingsDialogs.py

@@ -2578,7 +2578,7 @@ def __init__(self, parent):
 		# Translators: This is the label for a checkbox in the
 		#  Advanced settings panel.
 		label = _("Use UI Automation to access Microsoft &Excel spreadsheet controls when available")
-		self.UIAInMSExcelCheckBox = UIAGroup.addItem(wx.CheckBox(self, label=label))
+		self.UIAInMSExcelCheckBox = UIAGroup.addItem(wx.CheckBox(UIABox, label=label))
 		self.bindHelpEvent("UseUiaForExcel", self.UIAInMSExcelCheckBox)
 		self.UIAInMSExcelCheckBox.SetValue(config.conf["UIA"]["useInMSExcelWhenAvailable"])
 		self.UIAInMSExcelCheckBox.defaultValue = self._getDefaultValue(["UIA", "useInMSExcelWhenAvailable"])