Potential memory leak: lock not removed from proxies when the lock is destroyed [API-2129]

[gbarnett-hz]

Creating for visibility in case people think this is worth taking forward.

When you destroy a lock that lock is not removed CPProxyManager._lock_proxies resulting in a potential memory leak in long running clients that may otherwise destroy a number of locks. Obviously, usual caveats around such destruction.

lock = client.cp_subsystem.get_lock("my-distributed-lock").blocking()
fence = lock.lock()
try:
    # do something here
    pass
finally:
    lock.unlock()

lock.destroy() # <-- the lock proxy is not removed from internal proxy data structure

[github-actions]

Internal Jira issue: API-2129