Codebase would not longer compile with Scala 3.6

[WojciechMazur]

When running weekly Scala 3 Open Community Build we've found out that this project started to fail - build logs.

We've reproduced and minimized the issue, however, but it was decided that it now works as expected scala/scala3#21632 (comment)

The workaround to fix this issue is introducing local variables before calling unflift on Module instances.

Sidenote: Scala 3 OpenCB does compile the codebase twice for this project: 1 run using Scala 3.4.2 usues -rewrite, -source:3.4-migration mode to adapt the codebase, eg. rewrite with to &. That's why the reproducer uses a slightly different syntax

[pityka]

Thanks a lot for all of this! I will try to make it compile under the latest nightly builds of the compiler.