### Godot version

4.1

### System information

Windows

### Issue description

Being able to have multiple cursors similarly to vscode is a great feature, however it's only possible to add carets, not remove them. By left clicking you can remove all extra cursors but you cannot remove a specific one so after selecting multiple lines a single missclick, you have to reselect them all again. Looking at the original pr there was a remove_caret function added so it would make sense to be able to remove carets when clicking again, like in vscode.

![image](https://github.com/godotengine/godot/assets/19669673/3867c00e-9faa-4429-9c6d-f2d6d3883044)


### Steps to reproduce

- Alt click to add multiple carets
- Alt click on the same position again
- Nothing happens

### Minimal reproduction project

N/A
return get_visible_line_count_in_range(0, text.size() - 1);
}
void TextEdit::adjust_viewport_to_caret(int p_caret) {
	ERR_FAIL_INDEX(p_caret, carets.size());
	
	scrolling = false;
	minimap_clicked = false;
	int cur_line = get_caret_line(p_caret);
	int cur_wrap = get_caret_wrap_index(p_caret);
	int first_vis_line = get_first_visible_line();
	int first_vis_wrap = first_visible_line_wrap_ofs;
	int last_vis_line = get_last_full_visible_line();
	int last_vis_wrap = get_last_full_visible_line_wrap_index();
	if (cur_line < first_vis_line || (cur_line == first_vis_line && cur_wrap < first_vis_wrap)) {
		
		set_line_as_first_visible(cur_line, cur_wrap);
	} else if (cur_line > last_vis_line || (cur_line == last_vis_line && cur_wrap > last_vis_wrap)) {
		
		set_line_as_last_visible(cur_line, cur_wrap);
	}
	int visible_width = get_size().width - theme_cache.style_normal->get_minimum_size().width - gutters_width - gutter_padding;
	if (draw_minimap) {
		visible_width -= minimap_width;
	}
	if (v_scroll->is_visible_in_tree()) {