MDEV-7168: Tests innodb.innodb_stats_create_table
innodb.innodb_stats_drop_locked fail and
innodb.innodb_stats_fetch_nonexistent fails in buildbot on Windows

Analysis: Problem is that innodb_stats_create_on_corrupted
test renames mysql.innodb.index_stats and all the rest
are dependend on this table.

Fix: After rename back to original, restart mysqld to
make sure that table is correct.