Sema: make `@src().line` comptime-known

Reverts 89cef9f5f731f8f33dc935aac3c21bd57c92900d.

Closes #13315
46a6d50fdfAndrew Kelley committed on 10/24/2023, 1:35:10 AMparenta07f288
2 files changedLine totals unavailable