The brackets around the title of an obtained advancement (which are also colored along with the tile) do not have the hover event.

Steps to reproduce:

• Install the attached data pack.
• Ensure announceAdvancements is set to true. /gamerule announceAdvancements true
• If you already have the advancement from another bug report test. /advancement revoke @s only test_pack:test
• Try to display the advancement description by hovering over the announcement.

Expected behavior:
The brackets would also include the hover event, as it includes the color formatting too.

Current behavior:
The advancement description cannot be seen.

Notes:
Even if MC-256823 got fixed so 0-character long titles aren't allowed, the brackets should still have the hover event.