### 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 (!selecting_enabled) {
		return;
	}
	if (has_selection(p_caret) && get_selection_mode() == SelectionMode::SELECTION_MODE_SHIFT) {
		select(get_selection_line(p_caret), get_selection_column(p_caret), get_caret_line(p_caret), get_caret_column(p_caret), p_caret);
	}
}
void TextEdit::_update_wrap_at_column(bool p_force) {
	int new_wrap_at = get_size().width - theme_cache.style_normal->get_minimum_size().width - gutters_width - gutter_padding;
	if (draw_minimap) {
		new_wrap_at -= minimap_width;
	}
	if (v_scroll->is_visible_in_tree()) {
		new_wrap_at -= v_scroll->get_combined_minimum_size().width;
	}
	
	new_wrap_at -= wrap_right_offset;
	if ((wrap_at_column != new_wrap_at) || p_force) {
		wrap_at_column = new_wrap_at;
		if (line_wrapping_mode) {
			BitField<TextServer::LineBreakFlag> autowrap_flags = TextServer::BREAK_MANDATORY;
			switch (autowrap_mode) {