feat(persons): single person query via postgres

[mariusandra]

Problem

Most users are currently on this mode:

• persons list: via postgres
• single person page: via postgres

We have the flag, persons-hogql-query, but it's disabled for most people. It enables the mode:

• persons list: most via hogql, person column later via postgres
• single person page: via hogql, joined with distinct ids (no postgres)

The problem is that while the persons list query loads really well, the "single person page" takes forever to load (~20sec for some teams), as ClickHouse really isn't great for one off searches.

Changes

Makes the persons-hogql-query flag only enable the HogQL/ClickHouse persons list, leaving the single person's page as it is.

This allows us to release the HogQL powered persons list to everyone.

Does this work well for both Cloud and self-hosted?

Yes

How did you test this code?

Locally, got the old behaviour back.

[github-actions]

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[mariusandra]

Going to move fast and merge it in as it's just removing something that's not released.