change(notification_client): use cross process locking event and media stores instead of in-memory ones

[stefanceriu]

This will allow the NSE process to populate the event cache store with even data after retrieving it from sync, as opposed to dropping after rendering the notification it as it did previously.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.50%. Comparing base (238e4e8) to head (e377d58).
⚠️ Report is 5 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5934   +/-   ##
=======================================
  Coverage   88.50%   88.50%           
=======================================
  Files         362      362           
  Lines      103291   103293    +2     
  Branches   103291   103293    +2     
=======================================
+ Hits        91413    91415    +2     
- Misses       7535     7536    +1     
+ Partials     4343     4342    -1     

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[codspeed-hq]

CodSpeed Performance Report

Merging #5934 will not alter performance

_{Comparing stefan/notificationClientCrossProcessLockingStores (e377d58) with main (8637bdc)}

Summary

✅ 50 untouched