feat(weave): query filters for scorer_* Array/Map columns

[nikumar1206]

Description

Filter support for the Array/Map scorer columns.

• `Table` exposes `array_string_cols` and `map_cols`.
• `_transform_external_field_to_internal_field` resolves `scorer_ratings.rating` to `scorer_ratings['rating']` on ClickHouse and `json_extract(scorer_ratings, '$."rating"')` on SQLite. Backslash-escaped dots in keys are preserved (`scorer_reasons.tag\.nsfw` → key `tag.nsfw`).
• `$contains` on a bare Array(String) column compiles to `has(col, value)` on ClickHouse and `EXISTS (SELECT 1 FROM json_each(col) WHERE value = ?)` on SQLite — was `position()` / `INSTR()` before, which errors on arrays. Other operand shapes still hit the substring path.

Testing

Unit tests.

[nikumar1206]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• feat(weave): query filters for scorer_* Array/Map columns #6918 👈 (View in Graphite)
• feat(weave): add wandb.agent_monitor feedback type #6909
• feat(weave): scorer_* typed columns on feedback #6908
• chore(weave): add scorer_* columns to feedback table (031) #6906
• master

This stack of pull requests is managed by Graphite. Learn more about stacking.

[wandbot-3000]

Preview this PR with FeatureBee: https://beta.wandb.ai/?betaVersion=8df80922d5242bc86f0a9c7f1aed00fc837f4d1c

[codecov]

Codecov Report

❌ Patch coverage is 84.48276% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
weave/trace_server/orm.py	84.48%	4 Missing and 5 partials ⚠️

📢 Thoughts on this report? Let us know!

[jtschoonhoven]

Partial review. Will look again after you've updated to handle the new scorer_tag_reasons columns, etc. Looks pretty good so far.