### 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
_validate_line_caches();
	int para_count = 0;
	int to_line = main->first_invalid_line.load();
	for (int i = 0; i < to_line; i++) {
		if (main->lines[i].char_offset < p_char && p_char <= main->lines[i].char_offset + main->lines[i].char_count) {
			return para_count;
		} else {
			para_count++;
		}
	}
	return -1;
}
int RichTextLabel::get_total_character_count() const {
	// 
	int tc = 0;
	Item *it = main;
	while (it) {
		if (it->type == ITEM_TEXT) {
			ItemText *t = static_cast<ItemText *>(it);
			tc += t->text.length();
		} else if (it->type == ITEM_NEWLINE) {
			tc++;
		} else if (it->type == ITEM_IMAGE) {
			tc++;
		}
		it = _get_next_item(it, true);
	}
	return tc;
}
int RichTextLabel::get_total_glyph_count() const {