Target SSI fiscal-year outlays in calibration

[MaxGhenis]

Fixes #1109

Summary

• target SSI dollar calibration on policyengine-us ssi_federal_fiscal_year_outlays, while scaling CBO fiscal-year outlays to the FY benefit months computable from a single-year H5
• wire the single-year-compatible fiscal-year outlay target through both legacy ECPS loss-matrix targets and the policy_data.db national target ETL
• keep SSI recipient count/domain and raw-H5 aggregate checks on ssi, add computed fiscal-year outlay sanity coverage, and deactivate replaced legacy national ssi dollar targets when loading the new target
• keep validation/comparison smoke summaries on raw annual ssi, and bump policyengine-us to 1.705.1, which includes PolicyEngine-US #8374

Tests

• make lint
• env -u UV_FROZEN uv run pytest tests/unit/calibration/test_hourly_wage_income_consistency.py tests/unit/test_etl_national_targets.py tests/unit/calibration/test_loss_targets.py tests/unit/calibration/test_target_config.py tests/unit/calibration/test_validate_national_h5.py tests/unit/calibration/test_check_staging_sums.py tests/unit/calibration/test_compare_calibration_runs.py -q
• env -u UV_FROZEN uv run --no-sync --with pyyaml python scripts/run_quality_guards.py