Support process.stdin lifecycle teardown

[andrewtdiz]

Closes #3962.

Summary

• Add HIR/codegen/runtime support for process.stdin removeListener/off and lifecycle methods pause/resume/unref/ref/destroy.
• Track stdin listener sets, paused/refed/destroyed state, and stream flags so TUI teardown can quiesce naturally without process.exit(0).
• Extend the readline parity fixture and focused Rust tests for listener removal, pause/resume gating, and unref/destroy liveness.

Verification

• cargo fmt
• cargo check
• cargo test -p perry-stdlib readline -- --nocapture
• cargo build --release -p perry -p perry-runtime -p perry-stdlib
• ./run_parity_tests.sh --filter test_issue_347_readline_phase2

Note: cargo commands still emit existing workspace warnings unrelated to this change.