message: Prevent read-only warning on mouse move, wheel and release
  Avoid sending mouse move / wheel / release to Terminal in the first place.
  This kind of short-circuiting will prevent us reaching the
  attempt to send input to connection
  (that could result in the warning dialog in the read-only mode)
  Closes
diff: @@ -885,6 +885,7 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
  // - Whether the key was handled.
  bool TermControl::OnDirectKeyEvent(const uint32_t vkey, const uint8_t scanCode, const bool down)
  {
  + // Short-circuit isReadOnly check to avoid warning dialog
  if (_isReadOnly)
  {
  return false;
  @@ -970,6 +971,7 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
  const auto vkey = gsl::narrow_cast<WORD>(e.OriginalKey());
  const auto scanCode = gsl::narrow_cast<WORD>(e.KeyStatus().ScanCode);
  + // Short-circuit isReadOnly check to avoid warning dialog
  if (_isReadOnly)
  {
  e.Handled(!keyDown || _TryHandleKeyBinding(vkey, scanCode, modifiers));
  @@ -1369,7 +1371,8 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
  if (ptr.PointerDeviceType() == Windows::Devices::Input::PointerDeviceType::Mouse || ptr.PointerDeviceType() == Windows::Devices::Input::PointerDeviceType::Pen)
  {
  - if (_focused && _CanSendVTMouseInput())
  + // Short-circuit isReadOnly check to avoid warning dialog
  + if (_focused && !_isReadOnly && _CanSendVTMouseInput())
  {
  _TrySendMouseEvent(point);
  args.Handled(true);
  @@ -1521,7 +1524,8 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
  if (ptr.PointerDeviceType() == Windows::Devices::Input::PointerDeviceType::Mouse || ptr.PointerDeviceType() == Windows::Devices::Input::PointerDeviceType::Pen)
  {
  - if (_CanSendVTMouseInput())
  + // Short-circuit isReadOnly check to avoid warning dialog
  + if (!_isReadOnly && _CanSendVTMouseInput())
  {
  _TrySendMouseEvent(point);
  args.Handled(true);
  @@ -1596,7 +1600,8 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
  const int32_t delta,
  const TerminalInput::MouseButtonState state)
  {
  - if (_CanSendVTMouseInput())
  + // Short-circuit isReadOnly check to avoid warning dialog
  + if (!_isReadOnly && _CanSendVTMouseInput())
  {
  // Most mouse event handlers call
  // _TrySendMouseEvent(point);
  