### 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)

memdelete(text_edit);
}
TEST_CASE("[SceneTree][TextEdit] caret") {
	TextEdit *text_edit = memnew(TextEdit);
	text_edit->set_context_menu_enabled(false); 
	SceneTree::get_singleton()->get_root()->add_child(text_edit);
	text_edit->set_size(Size2(800, 200));
	text_edit->grab_focus();
	text_edit->set_line(0, "ffi");
	text_edit->set_caret_mid_grapheme_enabled(true);
	CHECK(text_edit->is_caret_mid_grapheme_enabled());
	SEND_GUI_ACTION("ui_text_caret_right");
	CHECK(text_edit->get_caret_column() == 1);
	SEND_GUI_ACTION("ui_text_caret_right");
	CHECK(text_edit->get_caret_column() == 2);
	SEND_GUI_ACTION("ui_text_caret_right");
	CHECK(text_edit->get_caret_column() == 3);
	SEND_GUI_ACTION("ui_text_caret_left");
	CHECK(text_edit->get_caret_column() == 2);
	text_edit->set_caret_mid_grapheme_enabled(false);
	CHECK_FALSE(text_edit->is_caret_mid_grapheme_enabled());
	SEND_GUI_ACTION("ui_text_caret_left");
	CHECK(text_edit->get_caret_column() == 0);
	SEND_GUI_ACTION("ui_text_caret_right");
	CHECK(text_edit->get_caret_column() == 3);
	SEND_GUI_ACTION("ui_text_caret_left");
	CHECK(text_edit->get_caret_column() == 0);
	text_edit->set_line(0, "Lorem  ipsum dolor sit amet, consectetur adipiscing elit. Donec vasius mattis leo, sed porta ex lacinia bibendum. Nunc bibendum pellentesque.");
	for (int i = 0; i < 3; i++) {
		text_edit->insert_line_at(0, "Lorem  ipsum dolor sit amet, consectetur adipiscing elit. Donec vasius mattis leo, sed porta ex lacinia bibendum. Nunc bibendum pellentesque.");