### 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 (caret_column != new_caret_column) {
				int _; 
				_get_above_below_caret_line_column(caret_line, get_caret_wrap_index(caret_index), caret_from_column, p_below, _, new_caret_from_column);
				_get_above_below_caret_line_column(caret_line, get_caret_wrap_index(caret_index), caret_to_column, p_below, _, new_caret_to_column);
			} else {
				new_caret_from_column = caret_from_column;
				new_caret_to_column = caret_to_column;
			}
		}
		
		const int new_caret_index = add_caret(new_caret_line, new_caret_column);
		if (new_caret_index == -1) {
			continue;
		}
		
		if (new_caret_from_column != new_caret_to_column) {
			select(new_caret_line, new_caret_from_column, new_caret_line, new_caret_to_column, new_caret_index);
			
			carets.write[new_caret_index].selection.selecting_line = new_caret_line;
			carets.write[new_caret_index].selection.selecting_column = new_caret_column == new_caret_from_column ? new_caret_to_column : new_caret_from_column;
			continue;
		}
		
		carets.write[new_caret_index].last_fit_x = carets[caret_index].last_fit_x;
	}
	merge_overlapping_carets();
	queue_redraw();
}
Vector<int> TextEdit::get_caret_index_edit_order() {