### 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 language;
}
void TextEdit::set_structured_text_bidi_override(TextServer::StructuredTextParser p_parser) {
	if (st_parser != p_parser) {
		st_parser = p_parser;
		for (int i = 0; i < text.size(); i++) {
			text.set(i, text[i], structured_text_parser(st_parser, st_args, text[i]));
		}
		queue_redraw();
	}
}
TextServer::StructuredTextParser TextEdit::get_structured_text_bidi_override() const {
	return st_parser;
}
void TextEdit::set_structured_text_bidi_override_options(Array p_args) {
	if (st_args == p_args) {
		return;
	}
	st_args = p_args;
	for (int i = 0; i < text.size(); i++) {
		text.set(i, text[i], structured_text_parser(st_parser, st_args, text[i]));
	}
	queue_redraw();
}
Array TextEdit::get_structured_text_bidi_override_options() const {