Fixed sorting by virtual column in PostgreSQL

[Helveg]

Closes #997 , quick recap: TypeORM is abandoned, I "fixed" this by pulling in my fork as dev dependency. I added a note in the README for users to install my fork to stay up to date with the latest fixes there.

[Helveg]

@ppetzold ping?

[Helveg]

@ppetzold there is also an upstream bug with the abandoned TypeORM for JSON columns, if you merge this PR I can work on a fix in my fork to allow for more JSON column operators.

[ppetzold]

@ppetzold there is also an upstream bug with the abandoned TypeORM for JSON columns, if you merge this PR I can work on a fix in my fork to allow for more JSON column operators.

ah sorry, missed this one. yep - could you rebase with master?

[Helveg]

Ok! Good to go!

[Helveg]

@ppetzold It appears Elevantiq has reached an agreement for maintenance of TypeORM with the original maintainers, they've picked up about 1 commit a day on main since January 2025! They've also just merged the PR for this issue!

This is great news, so let's wait a bit with switching to my fork, I'll update you if there's more changes.

Full announcement here: https://orkhan.gitbook.io/typeorm/docs/future-of-typeorm