fix: Update RelationIdLoader to use DriverUtils.getAlias

[janzipek]

Update RelationIdLoader to use DriverUtils.getAlias to prevent aliases being possibly trimmed by database.

Closes: #9379

Description of change

Updates RelationIdLoader class to use DriverUtils.getAlias to generate column aliases. This resolves issues with databases that have hard limit on column aliases such as Postgres.

I've never contributed to this project so I'm definitely not sure if this fix is correct, but it did resolve the issue with relationLoadStrategy: query I was having. There may be other places that don't use this util? Maybe this breaks some other behaviour that expects the columns to be properly named?

Pull-Request Checklist

• Code is up-to-date with the master branch
• npm run format to apply prettier formatting
• npm run test passes with this change
• This pull request links relevant issues as Fixes #0000
• There are new or updated unit tests validating the change
• Documentation has been updated to reflect this change
• The new commits follow conventions explained in CONTRIBUTING.md

[pleerock]

Thank you for contribution! 🎉

[pleerock]

damn you forgot to remove .only...

[janzipek]

Sorry :(