remove nontoplevel type hack + consider symbol disamb in type hash (#23969)

fixes #22571

Removes the hack added in #13589 which made non-top-level object type
symbols `gensym` because they couldn't be mangled into different names
for codegen vs. top-level types. Now we consider the new `disamb` field
(added in #21667) of the type symbols in the type hash (which is used
for the mangled name) to differentiate between the types.

In other parts of the compiler, specifically the [proc
mangling](https://github.com/nim-lang/Nim/blob/298ada3412c9cf5971abc2b3b891b9bb8612e170/compiler/mangleutils.nim#L59),
`itemId.item` is used instead of the `disamb` field, but I didn't use it
in case it's the outdated method.

0 files changed, 0 insertions, 0 deletions