[Bug libstdc++/112089] std::shared_lock::unlock should throw operation_not_permitted instead resource_deadlock_would_occur

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112089

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Backported for 13.3 and 12.4