* Fix royal alien pixel offset, change getter to variable (#54706)
Fixed a bug where royal aliens would have their base pixel offset applied twice, making them off-center (https://i.imgur.com/BtspaM0.png)
Changed the mob/living procs get_standard_pixel_x_offset() and get_standard_pixel_y_offset() to variables (body_position_pixel_x_offset and body_position_pixel_y_offset), to match the contribution guidelines.
Also corrected a few random things that weren't using base pixels but should have been.
* Fix royal alien pixel offset, change getter to variable
* Update pixel_shift.dm
Co-authored-by: Yenwodyah <yenwodyah@gmail.com>
Co-authored-by: Azarak <azarak10@gmail.com>