### 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
wrap_index = get_line_wrap_count(MIN(i, text.size() - 1)) - MAX(0, num_visible - p_visible_amount);
		
		
		
		int line = (p_line_from + num_total) - 1;
		if (_is_line_hidden(line)) {
			Point2i backtrack = get_next_visible_line_index_offset_from(line, 0, -1);
			num_total = num_total - (backtrack.x - 1);
			wrap_index = backtrack.y;
		}
	} else {
		p_visible_amount = ABS(p_visible_amount);
		int i;
		num_visible -= get_line_wrap_count(p_line_from) - p_wrap_index_from;
		for (i = p_line_from; i >= 0; i--) {
			num_total++;
			if (!_is_line_hidden(i)) {
				num_visible++;
				num_visible += get_line_wrap_count(i);
			}
			if (num_visible >= p_visible_amount) {
				break;
			}
		}
		wrap_index = MAX(0, num_visible - p_visible_amount);
	}
	wrap_index = MAX(wrap_index, 0);
	return Point2i(num_total, wrap_index);
}
void TextEdit::handle_unicode_input(const uint32_t p_unicode, int p_caret) {