### 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
if (!can_drag_minimap) {
		return;
	}
	int control_height = _get_control_height();
	int scroll_height = v_scroll->get_max() * (minimap_char_size.y + minimap_line_spacing);
	if (control_height > scroll_height) {
		control_height = scroll_height;
	}
	Point2 mp = get_local_mouse_pos();
	double diff = (mp.y - minimap_scroll_click_pos) / control_height;
	v_scroll->set_as_ratio(minimap_scroll_ratio + diff);
}
void TextEdit::_update_gutter_width() {
	gutters_width = 0;
	for (int i = 0; i < gutters.size(); i++) {
		if (gutters[i].draw) {
			gutters_width += gutters[i].width;
		}
	}
	if (gutters_width > 0) {
		gutter_padding = 2;
	}
	queue_redraw();
}
Dictionary TextEdit::_get_line_syntax_highlighting(int p_line) {