feat: multiple protections against leaky ws connections ws subscriber v2

[LukasDeco]

Summary by CodeRabbit

Release Notes

• New Features

  • Added diagnostic monitoring counters for connection and subscription tracking.

• Bug Fixes

  • Improved oracle subscription reliability by preventing duplicate subscriptions.
  • Enhanced error recovery with automatic cleanup on subscription failures.

• Performance

  • Optimized oracle state management to reduce race conditions and unnecessary updates.