chore(projections): remove debug log markers

[yordis]

• Keeps production projection logs operator-facing rather than carrying debug-era prefixes.
• Reduces noise when projection commands fail because the target projection is missing.

[cursor]

PR Summary

Low Risk
Changes are limited to log message text in projection command handlers and a test-only readiness wait for a TCP endpoint; no runtime behavior or data paths are altered.

Overview
Improves operator-facing projection management logs by removing the DBG:/marker-style error text and fixing a typo in the SetRunAs informational message; missing-projection cases now log Projection '{projection}' not found..

Stabilizes the TCP transport integration test when_invalid_data_is_sent_over_tcp by waiting for the selected node’s TCP endpoint to accept connections before attempting to connect and send invalid data.

^{Reviewed by Cursor Bugbot for commit c0100c8. Bugbot is set up for automated code reviews on this repo. Configure here.}

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 57d8c6fe-ded4-4177-ac75-132ada828ca8

📥 Commits

Reviewing files that changed from the base of the PR and between 7373777 and c0100c8.

📒 Files selected for processing (2)

• src/EventStore.Core.Tests/Services/Transport/Tcp/when_invalid_data_is_sent_over_tcp.cs
• src/EventStore.Projections.Core/Services/Management/ProjectionManager.cs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch yordis/chore-projection-log-prefix

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