### 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->has_selection());
			CHECK(text_edit->get_selected_text() == " is ");
			text_edit->set_selecting_enabled(false);
			CHECK_FALSE(text_edit->has_selection());
			text_edit->select(0, 8, 0, 4);
			CHECK_FALSE(text_edit->has_selection());
			text_edit->set_selecting_enabled(true);
			text_edit->select(0, 8, 0, 4);
			CHECK(text_edit->has_selection());
			SEND_GUI_ACTION("ui_text_caret_right");
			CHECK_FALSE(text_edit->has_selection());
			text_edit->delete_selection();
			CHECK(text_edit->get_text() == "this is some text\nfor selection");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 8);
			text_edit->select(0, 8, 0, 4);
			CHECK(text_edit->has_selection());
			SEND_GUI_ACTION("ui_text_backspace");
			CHECK(text_edit->get_text() == "thissome text\nfor selection");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 4);
			text_edit->undo();
			CHECK(text_edit->has_selection());
			CHECK(text_edit->get_text() == "this is some text\nfor selection");
			CHECK(text_edit->get_caret_line() == 0);
			CHECK(text_edit->get_caret_column() == 8);
			text_edit->redo();
			CHECK_FALSE(text_edit->has_selection());
			CHECK(text_edit->get_text() == "thissome text\nfor selection");
			CHECK(text_edit->get_caret_line() == 0);