fix(perf_hooks): align timing and validation semantics

[andrewtdiz]

Summary

• Closes node:perf_hooks: make performance.now relative to timeOrigin #3012
• Closes node:perf_hooks: capture timeOrigin at process start, not first read #3013
• Closes node:perf_hooks: support two-argument eventLoopUtilization diffs #3011
• Closes node:perf_hooks: validate PerformanceObserver.observe options #3010
• Closes node:perf_hooks: validate User Timing option endpoints and timestamps #3008
• Closes node:perf_hooks: validate performance.measure name argument #3088
• Anchors performance.timeOrigin at runtime startup and makes performance.now() monotonic relative to that origin.
• Adds two-argument eventLoopUtilization diffs across runtime dispatch, codegen lowering, and FFI declarations.
• Aligns User Timing validation for mark and measure timestamps, option endpoints, and measure name handling.
• Tightens PerformanceObserver.observe() option validation while preserving unsupported-entry no-op behavior.
• Adds focused Node 24 parity fixtures for the fixed timing and validation surfaces.

These issues are batched because they share the same node:perf_hooks runtime module and several fixes need matching dispatch/lowering changes to stay coherent.

Verification

• PATH=/home/github-runner/actions-runner/externals/node24/bin:$PATH ./run_parity_tests.sh --suite node-suite --module perf_hooks passed: 78 parity pass, 0 parity fail, 0 compile fail. Report: test-parity/reports/parity_report_20260531_024703.json
• RUSTC_WRAPPER= cargo check -p perry-runtime -p perry-codegen -p perry-hir -p perry-api-manifest -p perry passed with existing warnings.
• cargo fmt --all -- --check passed.
• ./scripts/check_file_size.sh passed.
• jq empty test-parity/known_failures.json passed.
• git diff HEAD~1..HEAD --check passed.

Non-goals

• This does not add broader event-loop instrumentation beyond the deterministic eventLoopUtilization shape and diff behavior covered here.