gen: incorrect bool decoder generation for some objects

[tdakkota]

For example: https://core.telegram.org/constructor/peerNotifySettings.

Should be:

  func (p *PeerNotifySettings) Decode(b *bin.Buffer) error {
	  if p == nil {
		  return fmt.Errorf("can't decode peerNotifySettings#af509d20 to nil")
	  }
	  if err := b.ConsumeID(PeerNotifySettingsTypeID); err != nil {
		  return fmt.Errorf("unable to decode peerNotifySettings#af509d20: %w", err)
	  }
	  {
		  if err := p.Flags.Decode(b); err != nil {
			  return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field flags: %w", err)
		  }
	  }
	  if p.Flags.Has(0) {
		  value, err := b.Bool()
		  if err != nil {
			  return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field show_previews: %w", err)
		  }
		  r.ShowPreviews = value
	  }
	  if p.Flags.Has(1) {
		  value, err := b.Bool()
		  if err != nil {
			  return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field silent: %w", err)
		  }
		  r.Silent = value
	  }
	  if p.Flags.Has(2) {
		  value, err := b.Int()
		  if err != nil {
			  return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field mute_until: %w", err)
		  }
		  p.MuteUntil = value
	  }
	  if p.Flags.Has(3) {
		  value, err := b.String()
		  if err != nil {
			  return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field sound: %w", err)
		  }
		  p.Sound = value
	  }
	  return nil
  }

Now:

td/tg/tl_peer_notify_settings_gen.go

Lines 142 to 171 in 0fa234c

	func (p *PeerNotifySettings) Decode(b *bin.Buffer) error {
	if p == nil {
	return fmt.Errorf("can't decode peerNotifySettings#af509d20 to nil")
	}
	if err := b.ConsumeID(PeerNotifySettingsTypeID); err != nil {
	return fmt.Errorf("unable to decode peerNotifySettings#af509d20: %w", err)
	}
	{
	if err := p.Flags.Decode(b); err != nil {
	return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field flags: %w", err)
	}
	}
	p.ShowPreviews = p.Flags.Has(0)
	p.Silent = p.Flags.Has(1)
	if p.Flags.Has(2) {
	value, err := b.Int()
	if err != nil {
	return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field mute_until: %w", err)
	}
	p.MuteUntil = value
	}
	if p.Flags.Has(3) {
	value, err := b.String()
	if err != nil {
	return fmt.Errorf("unable to decode peerNotifySettings#af509d20: field sound: %w", err)
	}
	p.Sound = value
	}
	return nil
	}

[shadowspore]

Seems like we interpret all Bool values as True (the difference between them is that True encoded in bitflag where Bool is not)