Advancements gui doesn't allow more than 26 tabs

When more than 26 tabs are made in the advancement gui, only the first 26 can be looked at.

Steps to reproduce:

• Apply the attached data pack (it will remove all vanilla advancements, so don't test in a world where you want to keep those)

• use /reload

• Observe the advancement tab has 1 free spot.

• Use /advancement grant @s only advancement_tabs:26

• Observe how the last spot gets filled

• Use /advancement grant @s only advancement_tabs:27

• Observe how no extra tab gets added, still allowing only 26 options.

Expected result:

All tabs would still be able to be inspected, eg with additional arrow buttons to switch to a "next page of tabs".

Actual result:
Only 26 tabs can be inspected at any time.