Introduce `BulkInsertSafe` mixin for safe bulk-inserts

What does this MR do?

Closes #196169 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides We'll update these as part of #196844 (closed)
• [-] Separation of EE specific content

Availability and Testing

Will be available to every developer as an AR model mixin. We will test this as part of #196844 (closed)