Entities with minecraft:scale_by_age flicker when adding/removing component groups

*Partner Rank:*

4

*Partner Team Reporting:*

Everbloom Studios

*Verification builds:*

1.13.0.10

*Summary:*

If an entity has the minecraft:scale_by_age component and currently aging, the entity's visible scale will reset to normal for a tick when a component group is added or removed, regardless of whether the scaling component was changed.

Oddly enough, if the player has the minecraft:is_baby component, the flickering does not occur.

*Impact:*
The flickering in entities that scale by age is distracting

*Repro Steps:*

1. Create and join the provided world, and watch the chicken grow in front of you. (spawn another one if needed)

*Observed Results:*

The chicken's scale will seem to flicker every second

*Expected Results:*

The chicken's scale should increase steadily without flickering.

*Screenshots/Videos attached: Yes/No*

Yes

*Regression Builds:*

Unknown

*Notes:*

Video (exceeded maximum file size, so here it is on YouTube)