Horizontal wrapped layout placed in a gird cell is incorrectly drawn

When a [horizontal_wrapped](https://docs.rs/egui/latest/egui/struct.Ui.html#method.horizontal_wrapped) is placed in a grid, and wrapping occurs, it seems that height is correctly calculated but the whole UI centered as if wasn't resized.

This is screenshot from my app - the tags here are slightly modified egui::Label with some extra padding. As one can observe, the height of the row is rather fine (bigger), but the horizontal wrapped layout is centered as it height before wrapping occurs.

Here's the minimum reproducer, based on `egui/examples/hello_world/src`: https://gist.github.com/WojciechMula/f926719d9c04e61da0214cacf18f16d8

Start with egui::Ui::horizontal_wrapped and the grid behavior described in the minimum reproducer based on egui/examples/hello_world/src; compare the layout bounds before and after wrapping. Use the linked gist and screenshot to reproduce the centered content. Done means wrapped content is positioned using its resized height while preserving the correct grid row height.

Written by the indexing model from the issue text.