Fix circular tax logic with SALT deduction

[patneyland]

• [ ] make format and make documentation has been run. (You may also want to run make test.)

• sales or prior year state and local income tax

• prior year local income tax paid

• prior year state income tax paid

What's changed

The SALT deduction is now calculated using the input variables listed above instead of trying to calculate based on the current year fiscalsim-us simulation.

[patneyland]

A single test is failing. Coming out with an incorrect calculation for the salt deduction. \tests\policy\baseline\gov\irs\integration\us_itemize.yaml needs to be adjusted.

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (c908062) 96.68% compared to head (fea2bdb) 98.37%. Report is 14 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #61 +/- ## ========================================== + Coverage 96.68% 98.37% +1.69% ========================================== Files 1401 1773 +372 Lines 21681 26463 +4782 Branches 201 176 -25 ========================================== + Hits 20962 26034 +5072 + Misses 698 398 -300 - Partials 21 31 +10 ``` | [Flag](https://app.codecov.io/gh/TheCGO/fiscalsim-us/pull/61/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=TheCGO) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/TheCGO/fiscalsim-us/pull/61/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=TheCGO) | `98.37% <ø> (+1.69%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=TheCGO#carryforward-flags-in-the-pull-request-comment) to find out more. [see 585 files with indirect coverage changes](https://app.codecov.io/gh/TheCGO/fiscalsim-us/pull/61/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=TheCGO)

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[rickecon]

@taxpat. Thanks for this one. Awesome. Merging.