xaxs/yaxs not restored when set

When `xaxs` and `yaxs` are set (e.g., automatically in `type_barplot` and `type_spineplot`), then they don't get restored afterwards affecting subsequent output. Example: ``` tinyplot(~ species, data = penguins, type = type_barplot()) tinyplot(1:10, pch = 19, cex = 2) ``` <img width="1350" height="675" alt="Image" src="https://github.com/user-attachments/assets/ef1aaf2f-720d-4831-b1aa-e273e7ba5e3a" /> ``` tinyplot(species ~ island, data = penguins) tinyplot(1:10, pch = 19, cex = 2) ``` <img width="1350" height="675" alt="Image" src="https://github.com/user-attachments/assets/5cb9b835-dca5-47db-a560-01d2711e43ae" /> Note the clipping of the first and last point in the scatterplot due to the modified `xaxs`/`yaxs` settings. The culprits are the `par()` settings in the following lines which do not restore the previous settings: https://github.com/grantmcdermott/tinyplot/blob/main/R/facet.R#L61-L63