fix(erlang): resolve selective imports by arity

[danusha2345]

Summary

Follow-up to #1615 for the remaining #1610 resolution correctness gaps.

• resolve -import(Module, [f/N]) to the exact exported module, function, and arity
• keep bare Erlang calls scoped to the current module so BIFs and out-of-repo calls cannot bind to unrelated project functions
• bump the extraction version so existing Erlang indexes are rebuilt
• add regressions for selective imports and same-named BIF collisions

This intentionally does not include the comment-arity change from #1619.

Verification

• npm run build:kernel
• npm run build
• npm test -- --reporter=dot — 194 files, 3231 passed, 10 skipped
• focused Erlang suite — 10 passed