### Godot version

v4.0.beta.custom_build [13f0158]

### System information

Windows 10

### Issue description

When doing operations (`begin_complex_operation` and `end_complex_operation`) with multiple selections in TextEdit, some of these selections don't revert upon undo. This behavior is affects some of script editor's operations, like duplicate selection and delete lines.

### Steps to reproduce

Open script editor, make multiple selections. Keep in mind what you have selected. Do duplicate selection (ctrl+shift+D). Undo (ctrl+Z). Compare the result to what you remember.

### Minimal reproduction project

N/A
ERR_FAIL_COND(p_caret > carets.size());
	if (!editable) {
		return;
	}
	String clipboard = DisplayServer::get_singleton()->clipboard_get();
	Vector<String> clipboad_lines = clipboard.split("\n");
	bool insert_line_per_caret = p_caret == -1 && carets.size() > 1 && clipboad_lines.size() == carets.size();
	begin_complex_operation();
	Vector<int> caret_edit_order = get_caret_index_edit_order();
	int clipboad_line = clipboad_lines.size() - 1;
	for (const int &i : caret_edit_order) {
		if (p_caret != -1 && p_caret != i) {
			continue;
		}
		if (has_selection(i)) {
			delete_selection(i);
		} else if (!cut_copy_line.is_empty() && cut_copy_line == clipboard) {
			set_caret_column(0, i == 0, i);
			String ins = "\n";
			clipboard += ins;
		}
		if (insert_line_per_caret) {
			clipboard = clipboad_lines[clipboad_line];
		}
		insert_text_at_caret(clipboard, i);
		clipboad_line--;
	}
	end_complex_operation();
}
void TextEdit::_paste_primary_clipboard_internal(int p_caret) {