### Godot version

4.1 

### System information

Win 10

### Issue description

![image](https://github.com/godotengine/godot/assets/3350340/fb4d82dc-0301-46d4-85e8-032c32b09fcf)

When causing _"output oveflow"_ by printing a lot of text, formating breaks. Possible because enclosing tag get flushed.

Suggested solution: clear text formating after _output oveflow_ warning.

### Steps to reproduce

Print a lot of text with different text tags (like [color] or [bgcolor]) to console. For example in _process function.

### Minimal reproduction project

N/A
if (visible_chars_behavior != p_behavior) {
		_stop_thread();
		visible_chars_behavior = p_behavior;
		main->first_invalid_line.store(0); 
		_validate_line_caches();
		queue_redraw();
	}
}
void RichTextLabel::set_visible_characters(int p_visible) {
	if (visible_characters != p_visible) {
		_stop_thread();
		visible_characters = p_visible;
		if (p_visible == -1) {
			visible_ratio = 1;
		} else {
			int total_char_count = get_total_character_count();
			if (total_char_count > 0) {
				visible_ratio = (float)p_visible / (float)total_char_count;
			}
		}
		if (visible_chars_behavior == TextServer::VC_CHARS_BEFORE_SHAPING) {
			main->first_invalid_line.store(0); 
			_validate_line_caches();
		}
		queue_redraw();
	}
}
int RichTextLabel::get_visible_characters() const {