Fix memory leak from orphaned invocations on deployment deletion

[Chandraveersingh1717]

Problem

When a deployment is deleted, pending invocations in the global queue are not cleaned up. This causes:

• Memory leak as orphaned invocations remain in the queue indefinitely
• Potential crashes when workers try to resolve invocations from deleted deployments

Solution

• Track deployment ownership by adding suffix field to invocations
• Clean up deployment-specific invocations before killing worker process
• Handle race conditions with safe null checks

Testing

• All existing tests pass
• No ESLint errors or warnings