When flipped upside down using the Grumm or Dinnerbone name, the entity's eye-level does not adjust accordingly

Relates to MC-49413, MC-231721 and MC-19571. When a mob is named Dinnerbone or Grumm, the entity's eye-level remains unaltered.

Steps to reproduce

1. Press F3 and B

2. /give @s minecraft:name_tag[minecraft:custom_name=Dinnerbone]

3. /give @s minecraft:name_tag[minecraft:custom_name=Grumm]

4. Give mobs the names Dinnerbone and Grumm

Observed outcome: The eye-level remained unadjusted.
Expected outcome: The eye-level should be mirrored along the vertical center.