feat: Remove hack to scrub inCommitTimestamp from commitInfo schema on write path

[OussamaSaoudi-db]

Please describe why this is necessary.

The write path currently does not support writing in-commit timestamps. Currently, we manually remove the inCommitTimestamp field from the CommitInfo schema to avoid writing null for that field. Moreover we remove the field regardless of whether ICT is enabled or not on the table.

Describe the functionality you are proposing.

Come up with a way to modify commitInfo schema based on whether inCommitTimestamp is enabled on the table. If ICT is enabled, then the schema should include it.

Additional context

This should ideally be a generalized way to update the schema for things like operationParameters and engineCommitInfo.