### 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
tooltip_callback = p_tooltip_callback;
}
bool TextEdit::has_ime_text() const {
	return !ime_text.is_empty();
}
void TextEdit::set_editable(const bool p_editable) {
	if (editable == p_editable) {
		return;
	}
	editable = p_editable;
	queue_redraw();
}
bool TextEdit::is_editable() const {