### 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)

}
		if (k->is_action("ui_text_delete_all_to_right", true)) {
			_delete(false, true);
			accept_event();
			return;
		}
		if (k->is_action("ui_text_delete_word", true)) {
			_delete(true);
			accept_event();
			return;
		}
		if (k->is_action("ui_text_delete", true)) {
			_delete();
			accept_event();
			return;
		}
		
		if (k->is_action("ui_text_scroll_up", true)) {
			_scroll_lines_up();
			accept_event();
			return;
		}
		if (k->is_action("ui_text_scroll_down", true)) {
			_scroll_lines_down();
			accept_event();
			return;
		}
		if (is_shortcut_keys_enabled()) {