fix: Fix list renderItem typings

[gethinwebster]

Description

The typings of renderItem mismatched the underlying implementation

Related links, issue #, if available: AWSUI-61861

How has this been tested?

Dry run

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.44%. Comparing base (bd81b05) to head (53083cf).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4388      +/-   ##
==========================================
- Coverage   97.45%   97.44%   -0.02%     
==========================================
  Files         902      906       +4     
  Lines       26479    26561      +82     
  Branches     9546     9582      +36     
==========================================
+ Hits        25805    25882      +77     
- Misses        668      673       +5     
  Partials        6        6              

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