### Godot version

Godot 4.0 statble

### System information

Windows 10

### Issue description

TextEdit boundary wrapmode not works, it only removes the horizontal scrollbar

### Steps to reproduce

Add a textedit in editor, set  the wrap mode to boundary, type something.

### Minimal reproduction project

![image](https://user-images.githubusercontent.com/9168814/224538077-2efb4e67-8976-496e-9223-c460365ecc28.png)
![image](https://user-images.githubusercontent.com/9168814/224538084-af773b86-d73a-4e8b-9b66-a0fb4bde1168.png)

CHECK(text_edit->get_selection_mode() == TextEdit::SelectionMode::SELECTION_MODE_SHIFT);
			CHECK(text_edit->get_caret_line() == 1);
			CHECK(text_edit->get_caret_column() == 9);
			SIGNAL_CHECK("caret_changed", empty_signal_args);
			text_edit->set_caret_line(0);
			text_edit->set_caret_column(0);
			text_edit->set_selecting_enabled(false);
			CHECK_FALSE(text_edit->has_selection());
			CHECK(text_edit->get_selected_text() == "");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 0);
			text_edit->select_all();
			CHECK_FALSE(text_edit->has_selection());
			CHECK(text_edit->get_selected_text() == "");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 0);
		}
		SUBCASE("[TextEdit] select word under caret") {
			text_edit->set_text("\ntest   test\ntest   test");
			text_edit->set_caret_column(0);
			text_edit->set_caret_line(1);
			text_edit->add_caret(2, 0);
			text_edit->add_caret(2, 2);
			CHECK(text_edit->get_caret_count() == 3);
			MessageQueue::get_singleton()->flush();
			SIGNAL_DISCARD("text_set");
			SIGNAL_DISCARD("text_changed");
			SIGNAL_DISCARD("lines_edited_from");
			SIGNAL_DISCARD("caret_changed");
			text_edit->select_word_under_caret();