Update findinmap resolv to handle Ref psedueparams

[kddejong]

Issue #, if available: fix #3784

Description of changes:

• This will update the FindInMap resolver to look for a secondary key to match a string when the top level key is a Ref to a pseudo-parameter (AWS::AccountId or AWS::Region)
• We will return 0 results if the top level key is a Ref to a pseudo parameter and the second level is also a Ref
• Return a resolution failure if the top level key is a ref to a pseudo parameter and the second level key cannot be found in in the mapping
• Return a resolution failure if the top level key is a ref to a pseudo parameter (AWS::AccountId or AWS::Region) and none of the keys match an accound ID regex or region name.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.78%. Comparing base (a6eb97a) to head (b34d5c0). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3785 +/- ## ======================================= Coverage 93.78% 93.78% ======================================= Files 363 363 Lines 12394 12414 +20 Branches 2530 2541 +11 ======================================= + Hits 11624 11643 +19 Misses 429 429 - Partials 341 342 +1 ``` | [Flag](https://app.codecov.io/gh/aws-cloudformation/cfn-lint/pull/3785/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-cloudformation) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/aws-cloudformation/cfn-lint/pull/3785/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=aws-cloudformation) | `93.74% <100.00%> (+<0.01%)` | :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=aws-cloudformation#carryforward-flags-in-the-pull-request-comment) to find out more.

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