message: Change SettingsTab close icon to be smaller
  We were using the wrong close icon for the settings tab. This is a side effect of `TerminalTab` overriding `TabBase`'s implementation.
  Settings UI Epic
  Closes
diff: @@ -49,7 +49,7 @@ namespace winrt::TerminalApp::implementation
  Controls::MenuFlyoutItem closeTabMenuItem;
  Controls::FontIcon closeSymbol;
  closeSymbol.FontFamily(Media::FontFamily{ L"Segoe MDL2 Assets" });
  - closeSymbol.Glyph(L"\xE8BB");
  + closeSymbol.Glyph(L"\xE711");
  closeTabMenuItem.Click([weakThis](auto&&, auto&&) {
  if (auto tab{ weakThis.get() })
  