Investigate why memory tracker misses ServerFamily::replica_ deallocation

[kostasrim]

To reproduce:

1. Run python3 -m pytest dragonfly/replication_test.py --df allocation_tracker=256:88285184 -k "test_big_containers"
2. cat log | python3 parse_allocator_tracking_logs.py

Now observe:

Deallocating non existing address: 0x2be840b0000 640
Address: 0x2be840d0e00, Size: 768 bytes, original line: `I20250110 12:09:54.542371 94710 allocation_tracker.cc:79] Allocating 768 bytes (0x2be840d0e00). Stack: 0x59364644d018  std::__allocate_guarded<>()
`
Address: 0x2be843a0b00, Size: 256 bytes, original line: `I20250110 12:09:54.583632 94710 allocation_tracker.cc:79] Allocating 256 bytes (0x2be843a0b00). Stack: 0x5936468cfe88  dfly::ProtocolClient::ProtocolClient()
`