test: move abort test from pummel to abort directory

test-abort-fatal-error is not resource intensive and would be better in
the abort directory than the pummel directory.

PR-URL: #38396
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott