### 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
if (GDVIRTUAL_CALL(_cut, p_caret)) {
		return;
	}
	_cut_internal(p_caret);
}
void TextEdit::copy(int p_caret) {
	if (GDVIRTUAL_CALL(_copy, p_caret)) {
		return;
	}
	_copy_internal(p_caret);
}
void TextEdit::paste(int p_caret) {
	if (GDVIRTUAL_CALL(_paste, p_caret)) {
		return;
	}
	_paste_internal(p_caret);
}
void TextEdit::paste_primary_clipboard(int p_caret) {
	if (GDVIRTUAL_CALL(_paste_primary_clipboard, p_caret)) {
		return;
	}
	_paste_primary_clipboard_internal(p_caret);
}
PopupMenu *TextEdit::get_menu() const {
	if (!menu) {
		const_cast<TextEdit *>(this)->_generate_context_menu();
	}
	return menu;
}
bool TextEdit::is_menu_visible() const {