Parent scale.z affects child sprite z-index #4149
Description
Bevy version
0.6.1
Operating system & version
Win 11
What you did
Spawned a parented sprite and change the parent's scale.z to something other than 1.0
What you expected to happen
Z-index of a sprite wouldn't be affected at all or the transform of the sprite would affect it as well.
What actually happened
It's affected by the parent transforms
Additional information
Repro
https://github.com/SecretPocketCat/bevy_issue_repro/blob/sprite_index_scale/src/main.rs
(the expected order from bottom would be red, green, blue)
