Merged requested to merge 3799-tsan-race-between-dns_rbtnode_t-bitfields-v9_16 into v9_16
Backport of MR !7392 (merged)
The write node lock needs to be held when setting node->wild in add_wildcard_magic except when being called from loading_addrdataset which is used to load the zone without locking during its initial load.
(cherry picked from commit 81c24b8d)
Closes #3799 (closed)