message: Stylize the renamer Action button as a Accent button
  Closes
diff: x:Uid="WindowRenamer"
  Title="{x:Bind WindowIdForDisplay}"
  x:Load="False"
  - ActionButtonClick="_WindowRenamerActionClick">
  + ActionButtonClick="_WindowRenamerActionClick"
  + ActionButtonStyle="{ThemeResource AccentButtonStyle}">
  <mux:TeachingTip.Content>
  <TextBox x:Name="WindowRenamerTextBox"
  KeyUp="_WindowRenamerKeyUp"
  