### Godot version

4.0 stable

### System information

Manjaro Linux, kernel 6.1.1-1-MANJARO, AMD Ryzen 5 3600, AMD RX 580

### Issue description

The `wrap_mode` property of the `TextEdit` node doesn't seem to really do anything. Setting it to `LINE_WRAPPING_BOUNDARY` simply means that there won't be an horizontal scrollbar if the text overshoots the boundary, instead of actually forcing the text to the next line so that it stays visible.

### Steps to reproduce

Create a TextEdit node and set its `wrap_mode` property to `LINE_WRAPPING_BOUNDARY`

### Minimal reproduction project

[WrapBugDemo.zip](https://github.com/godotengine/godot/files/10875969/WrapBugDemo.zip)

CHECK(text_edit->get_total_visible_line_count() > total_visible_lines);
	text_edit->set_line_as_center_visible(visible_lines + (visible_lines / 2) + 5, 1);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == visible_lines + (visible_lines / 2));
	CHECK(text_edit->get_v_scroll() == (visible_lines * 3));
	CHECK(text_edit->get_last_full_visible_line() == (visible_lines * 2) - 1);
	CHECK(text_edit->get_last_full_visible_line_wrap_index() == 1);
	
	int line_count = text_edit->get_line_count();
	text_edit->set_scroll_past_end_of_file_enabled(true);
	MessageQueue::get_singleton()->flush();
	text_edit->set_line_as_center_visible(line_count - 1);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == (visible_lines * 2) + 3);
	CHECK(text_edit->get_v_scroll() == (visible_lines * 4) + 6);
	CHECK(text_edit->get_last_full_visible_line() == (visible_lines * 2) + 8);
	CHECK(text_edit->get_last_full_visible_line_wrap_index() == 0);
	text_edit->set_scroll_past_end_of_file_enabled(false);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == (visible_lines * 2) + 3);
	CHECK(text_edit->get_v_scroll() == (visible_lines * 4) - 4);
	CHECK(text_edit->get_last_full_visible_line() == (visible_lines * 2) + 8);
	CHECK(text_edit->get_last_full_visible_line_wrap_index() == 0);
	
	text_edit->set_line_wrapping_mode(TextEdit::LineWrappingMode::LINE_WRAPPING_NONE);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_total_visible_line_count() == total_visible_lines);
	text_edit->set_line_as_first_visible(0);
	MessageQueue::get_singleton()->flush();
	CHECK(text_edit->get_first_visible_line() == 0);