### 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_selection_from_column(2) == 0);
		CHECK(text_edit->get_selection_to_column(2) == 4);
	}
	memdelete(text_edit);
}
TEST_CASE("[SceneTree][TextEdit] line wrapping") {
	TextEdit *text_edit = memnew(TextEdit);
	SceneTree::get_singleton()->get_root()->add_child(text_edit);
	text_edit->grab_focus();
	
	text_edit->set_size(Size2(800, 200));
	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.");
	CHECK_FALSE(text_edit->is_line_wrapped(0));
	CHECK(text_edit->get_line_wrap_count(0) == 0);
	CHECK(text_edit->get_line_wrap_index_at_column(0, 130) == 0);
	CHECK(text_edit->get_line_wrapped_text(0).size() == 1);
	SIGNAL_WATCH(text_edit, "text_set");
	SIGNAL_WATCH(text_edit, "text_changed");
	SIGNAL_WATCH(text_edit, "lines_edited_from");
	SIGNAL_WATCH(text_edit, "caret_changed");
	text_edit->set_line_wrapping_mode(TextEdit::LineWrappingMode::LINE_WRAPPING_BOUNDARY);
	SIGNAL_CHECK_FALSE("text_set");
	SIGNAL_CHECK_FALSE("text_changed");
	SIGNAL_CHECK_FALSE("lines_edited_from");
	SIGNAL_CHECK_FALSE("caret_changed");
	CHECK(text_edit->is_line_wrapped(0));
	CHECK(text_edit->get_line_wrap_count(0) == 1);
	CHECK(text_edit->get_line_wrap_index_at_column(0, 130) == 1);
	CHECK(text_edit->get_line_wrapped_text(0).size() == 2);
	SIGNAL_UNWATCH(text_edit, "text_set");