Bundle tooltip isn't updated in the anvil if the output slot is selected before the name is changed

Steps to Reproduce:

1. Enable the Bundle experiment in the world settings
2. Put a bundle inside of an anvil
3. Hover the output slot
4. Change the item name and observe
   The bundle icon appears but no tooltip is displayed
5. Move the mouse elsewhere and hover the same slot again
   The tooltip is displayed

Observed Results:
The tooltip doesn't appear or disappear while the mouse is hovering the anvil's output slot.

Expected Results:
The tooltip appears and disappears alongside the item icon.

Screenshots/Videos attached: Yes

Notes: Renamed bundles also don't have accurate tooltips (MCPE-186622)