message: Change tab close and rename icons to better fit the UI
  Closes
diff: @@ -515,7 +515,7 @@ 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() })
  @@ -561,7 +561,7 @@ namespace winrt::TerminalApp::implementation
  // "Rename Tab"
  Controls::FontIcon renameTabSymbol;
  renameTabSymbol.FontFamily(Media::FontFamily{ L"Segoe MDL2 Assets" });
  - renameTabSymbol.Glyph(L"\xE932"); // Label
  + renameTabSymbol.Glyph(L"\xE8AC"); // Rename
  renameTabMenuItem.Click([weakThis](auto&&, auto&&) {
  if (auto tab{ weakThis.get() })
  