FIX: sort by subquery results in error that tableAlias.column does not exists

[MohdAhmad1]

This pull request addresses issues related to sorting within a column that is created by a subquery

example

   // service.ts
	 const builder = this.pomBoxRepository.createQueryBuilder("pb");

	// subquery
    builder
      .addSelect((subQuery) => {
        return subQuery
          .select("COUNT(t.id)", "trayCount")
          .from(Tray, "t")
          .where("t.pom_box_name = pb.name");
      }, "trayCount")

	 return paginate(query, builder, {
       sortableColumns: ["trayCount" as any],
    });

this service results an error from db Unknown column 'pb.trayCount' in 'order clause'.
This PR fixes above problem

[Helveg]

Hi! Thanks for your contribution! Could you add a test that shows that this PR fixes the problem you speak of? :)

[ppetzold]

Please see comment from @Helveg

Hi! Thanks for your contribution! Could you add a test that shows that this PR fixes the problem you speak of? :)

If you have showcased / covered the bug in a test, I am happily merging your PR 👋

EDIT: CI is failing due to format. Run npm run format to fix.