fix: fix ee error tracking for replication

[levkk]

• fix: fix copy data error tracking (happens at CopyDone)
• chore: add replication slot tracking

[codecov]

Codecov Report

❌ Patch coverage is 25.00000% with 15 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
.../src/backend/replication/logical/publisher/slot.rs	0.00%	5 Missing ⚠️
pgdog/src/backend/replication/logical/status.rs	42.85%	4 Missing ⚠️
...end/replication/logical/publisher/parallel_sync.rs	0.00%	3 Missing ⚠️
pgdog/src/backend/replication/logical/ee/mod.rs	50.00%	2 Missing ⚠️
...src/backend/replication/logical/publisher/table.rs	0.00%	1 Missing ⚠️

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