[andrewtdiz]

Summary

• add a real global Object call thunk for nullish inputs
• preserve identity when Object() receives an existing object
• add an exact Node parity fixture for Issue Two ES5 correctness bugs: Object(null)→{} and function-declaration reassignment #3149 Bug 1

Scope

This addresses only Issue #3149 Bug 1: Object(), Object(null), and Object(undefined) call-form behavior. Function-declaration reassignment from the same issue is intentionally left out of this PR.

Verification

• Baseline exact fixture failed before the fix: Object()/Object(null)/Object(undefined) returned undefined and Object(base) did not preserve identity
• ./run_parity_tests.sh --suite node-suite --filter node-suite/globals/object-nullish-call
• ./run_parity_tests.sh --suite node-suite --filter node-suite/globals/global-functions
• cargo fmt --all -- --check
• ./scripts/check_file_size.sh
• jq empty test-parity/known_failures.json
• git diff --check origin/main...HEAD && git diff --check
• cargo check -p perry-runtime