fix(attributes): attach the auto filter in the batch creation path

[abnegate]

What

createAttributes() is the third public path that creates attributes, and it was the only one that never attached the type-named filter listed in Database::ATTRIBUTE_FILTER_TYPES. createAttribute() and createCollection() both attach it before validating.

This adds the same guard to the batch path, right after the "Missing attribute key" check.

Why it matters

The attribute validator requires that filter to be present, so a datetime, point, linestring, polygon, vector or object attribute created through the batch path was rejected outright:

Utopia\Database\Exception: Attribute of type: datetime requires the following filters: datetime

Had validation let it through, the value would have been stored without the encode/decode the other two paths apply — a datetime written as +05:00 would never have been normalised to +00:00.

Test

testCreateAttributesAddingAutoFilter creates a datetime attribute via createAttributes(), writes a +05:00 offset and asserts it reads back normalised to +00:00. It skips on adapters without Capability::BatchCreateAttributes.

Verified it is a real regression test — with the src/ change reverted it fails on the validator error above, and passes with the fix.

Verification

Check	Result
Unit suite (paratest, 4 procs)	1606 tests, 6195 assertions — green
MariaDB adapter e2e	793 tests, 22975 assertions — green
composer lint (Pint, PSR-12)	passed

🤖 Generated with Claude Code

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[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge, with the batch path now aligned with the established automatic-filter behavior.

Summary

• Adds the type-named filter before batch attribute validation.
• Deduplicates filters while preserving their effective order.
• Adds an end-to-end datetime test proving offset normalization through the batch path.

_{Reviews (1) · Last reviewed commit: "fix(attributes): attach the auto filter ..."}