* Fix semaphores in IDF & std::string assert
Fixes the problem of giving a mutex from a callback with the latest IDF. Also addresses an occasional assert that happens when the btc_task callback gives the semaphore and causes an assert due to both cores potentially writing m_owner concurrently.
* Restored m_owner position in wait() as requested
* Reapply assert fix and move setting m_owner in ::give()
Revert previous revert commit and move setting of m_owner in ::give to before giving the semaphore to prevent race condition possibility.
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