### 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_v_scroll_speed() == 10);
	text_edit->set_v_scroll_speed(1);
	CHECK(text_edit->get_v_scroll_speed() == 1);
	ERR_PRINT_ON;
	
	int v_scroll = text_edit->get_v_scroll();
	SEND_GUI_MOUSE_BUTTON_EVENT(Point2i(10, 10), MouseButton::WHEEL_DOWN, 0, Key::NONE);
	CHECK(text_edit->get_v_scroll() > v_scroll);
	SEND_GUI_MOUSE_BUTTON_EVENT(Point2i(10, 10), MouseButton::WHEEL_UP, 0, Key::NONE);
	CHECK(text_edit->get_v_scroll() == v_scroll);
	
	text_edit->set_smooth_scroll_enabled(true);
	v_scroll = text_edit->get_v_scroll();
	SEND_GUI_MOUSE_BUTTON_EVENT(Point2i(10, 10), MouseButton::WHEEL_DOWN, 0, Key::NONE);
	text_edit->notification(TextEdit::NOTIFICATION_INTERNAL_PHYSICS_PROCESS);
	CHECK(text_edit->get_v_scroll() >= v_scroll);
	SEND_GUI_MOUSE_BUTTON_EVENT(Point2i(10, 10), MouseButton::WHEEL_UP, 0, Key::NONE);
	text_edit->notification(TextEdit::NOTIFICATION_INTERNAL_PHYSICS_PROCESS);
	CHECK(text_edit->get_v_scroll() == v_scroll);
	v_scroll = text_edit->get_v_scroll();
	text_edit->set_v_scroll_speed(10000);
	SEND_GUI_MOUSE_BUTTON_EVENT(Point2i(10, 10), MouseButton::WHEEL_DOWN, 0, Key::NONE);
	text_edit->notification(TextEdit::NOTIFICATION_INTERNAL_PHYSICS_PROCESS);
	CHECK(text_edit->get_v_scroll() >= v_scroll);
	SEND_GUI_MOUSE_BUTTON_EVENT(Point2i(10, 10), MouseButton::WHEEL_UP, 0, Key::NONE);
	text_edit->notification(TextEdit::NOTIFICATION_INTERNAL_PHYSICS_PROCESS);
	CHECK(text_edit->get_v_scroll() == v_scroll);
	ERR_PRINT_OFF;
	CHECK(text_edit->get_scroll_pos_for_line(-1) == 0);
	CHECK(text_edit->get_scroll_pos_for_line(1000) == 0);