### 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)

text_edit->set_caret_line(0);
	text_edit->set_caret_column(0);
	MessageQueue::get_singleton()->flush();
	SIGNAL_DISCARD("caret_changed");
	SUBCASE("[TextEdit] add remove caret") {
		
		CHECK(text_edit->add_caret(0, 0) == -1);
		MessageQueue::get_singleton()->flush();
		SIGNAL_CHECK_FALSE("caret_changed");
		
		text_edit->select(0, 0, 2, 4);
		CHECK(text_edit->add_caret(0, 0) == -1);
		CHECK(text_edit->add_caret(2, 4) == -1);
		CHECK(text_edit->add_caret(1, 2) == -1);
		
		CHECK(text_edit->add_caret(-1, 0) == -1);
		CHECK(text_edit->add_caret(5, 0) == -1);
		CHECK(text_edit->add_caret(0, 100) == -1);
		MessageQueue::get_singleton()->flush();
		SIGNAL_CHECK_FALSE("caret_changed");
		CHECK(text_edit->get_caret_count() == 1);
		text_edit->deselect();
		SIGNAL_CHECK_FALSE("caret_changed");
		CHECK(text_edit->add_caret(0, 1) == 1);
		MessageQueue::get_singleton()->flush();
		SIGNAL_CHECK("caret_changed", empty_signal_args);
		CHECK(text_edit->get_caret_count() == 2);
		CHECK(text_edit->get_caret_line(0) == 0);
		CHECK(text_edit->get_caret_column(0) == 0);
		CHECK(text_edit->get_caret_line(1) == 0);