fix(assert): expose strict self alias

[andrewtdiz]

Closes #2698.

Summary

• adds the assert/strict.strict API manifest entries for both property access and call lowering
• makes node:assert/strict expose an enumerable strict self-alias matching Node
• regenerates API docs and adds a focused parity fixture covering default, named, namespace, and parent-module strict aliases

Verification

• PATH=/home/github-runner/actions-runner/externals/node24/bin:$PATH node --experimental-strip-types test-parity/node-suite/assert/imports/strict-self-alias.ts
• RUSTC_WRAPPER= target/release/perry test-parity/node-suite/assert/imports/strict-self-alias.ts -o /tmp/perry_assert_strict_alias_2698 && /tmp/perry_assert_strict_alias_2698
• PATH=/home/github-runner/actions-runner/externals/node24/bin:$PATH RUSTC_WRAPPER= ./run_parity_tests.sh --suite node-suite --module assert --filter strict-self-alias
• RUSTC_WRAPPER= ./scripts/regen_api_docs.sh
• cargo fmt --all -- --check
• git diff --check
• ./scripts/check_file_size.sh
• jq empty test-parity/known_failures.json test-parity/threshold.json
• RUSTC_WRAPPER= cargo check -p perry-api-manifest -p perry-codegen -p perry-runtime
• RUSTC_WRAPPER= cargo test -p perry-api-manifest
• RUSTC_WRAPPER= cargo test -p perry-codegen --test manifest_consistency