[Backport 2024.2] fix(logcollector): silent errors from saving of schema details

[mergify]

Silent collection schema details failure.
Now it fails in the K8S test. Need be fixed later

Collection schema is presented by #9329

Testing

• [ ]

PR pre-checks (self review)

• I added the relevant backport labels
• I didn't leave commented-out/debugging code

Reminders

• Add New configuration option and document them (in sdcm/sct_config.py)
• Add unit tests to cover my changes (under unit-test/ folder)
• Update the Readme/doc folder relevant to this change (if needed)

(cherry picked from commit c177a65)

Parent PR: #9450

[mergify]

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