Disable known-failing tests

MDEV-13568: Purge is not blocked by LOCK TABLES. Should it?

MDEV-13893/MDEV-12699: Crash recovery of corrupted or non-decryptable
pages is broken.

mysql-test/suite/encryption/disabled.def

@@ -12,4 +12,4 @@
 
 innodb_scrub            : MDEV-8139 scrubbing does not work reliably
 innodb_scrub_background : MDEV-8139 scrubbing does not work reliably
-
+innodb-redo-badkey : MDEV-13893 / MDEV-12699 Improve crash recovery of corrupted data pages

mysql-test/suite/gcol/disabled.def

+innodb_virtual_debug_purge : MDEV-13568 should purge yield to LOCK TABLES?