fix: Added aria descriptions to code-editors

[ClaudioGSDB]

Description

Improved the code-editor comnponents by adding an aria description to read out errors and warnings directly from the editor

Related links, issue #, if available:

• AWSUI-61289

How has this been tested?

It was tested by using voice over to see if it was reading the description, also it was wrapped in different language context to see if it would also translate to other languages using i18n

go into the code editor component and see if it reads the errors and warnings when selecting the code editor itself (not the labels at the bottom)

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 97.16%. Comparing base (8584b2b) to head (5e45f97).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3945   +/-   ##
=======================================
  Coverage   97.16%   97.16%           
=======================================
  Files         854      854           
  Lines       24968    24973    +5     
  Branches     8793     8796    +3     
=======================================
+ Hits        24259    24264    +5     
+ Misses        702      660   -42     
- Partials        7       49   +42     

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