fix MAINTAIN privileges for TOAST tables and partitions

When Who What
2023-01-14 08:26:06 Jeff Davis (jdavis) Closed in commitfest 2023-01 with status: Committed
2023-01-14 08:26:06 Jeff Davis (jdavis) Changed committer to jdavis
2022-12-19 17:34:35 Nathan Bossart (bossartn) Changed authors to Nathan Bossart (bossartn)
2022-12-19 17:34:35 Nathan Bossart (bossartn) Changed targetversion to 16
2022-12-19 17:34:26 Nathan Bossart (bossartn) Attached mail thread 20221208183707.GA55474@nathanxps13
2022-12-19 17:34:25 Nathan Bossart (bossartn) Created patch record