your allocable earnings are not capital gains, that is ordinary income to be included on 1040 Line 4b.
As pointed out by dmertz elsewhere you might get a code 8J or code PJ depending on the custodian.
Usual assumption on this forum is code PJ but according to Pub 590 in your case it should be 8J which means you will report this on your 2024 tax return.
@Sas0798
