Fix #217 and #221

Summary

Fix for #217 (closed) and #221 (closed)

Focus

• The fix for #221 (closed) is only one missing catch clause.
• Everything else is concerned with #217 (closed). The reverted code basically marked an entity for a necessary update where this was not necessary. This triggered some checks later which would then copy the override status of descriptions, names, and data types. This is done explicitly here instead.

Test Environment

Integration tests in caosdb-pyinttest!29 (merged)

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