fixes #20155; repr range with distinct types is broken with ORC

[ringabout]

fixes #20155; I tried my best and had to do some hacks with typetrait support to my knowledge.

template repr*(x: distinct): string will match range types with distinct subtypes. To repr the real distinct type, we need to skip the range types, otherwise it causes endless recursion.

[Araq]

Please explain the problem and your solution more.

[Varriount]

@ringabout Sorry about this - I accidentally merged this PR. Could you make another one?

[github-actions[bot]]

Thanks for your hard work on this PR! The lines below are statistics of the Nim compiler built from 37b3f62eef16b0e7cb89e18f9ddc1fb96e17fb1b

Hint: mm: orc; threads: on; opt: speed; options: -d:release 164169 lines; 12.722s; 842.562MiB peakmem

[ringabout]

@Varriount, sure