feat: add x-large and xx-large sizes to modal

[amanabiy]

Description

This PR adds two new size options to Modal component: x-large (1024px) and xx-large (1280px).

Related links, issue #, if available: gfq0AFhyrah9

How has this been tested?

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 97.35%. Comparing base (f81e1dc) to head (874c6ae).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4240      +/-   ##
==========================================
+ Coverage   97.30%   97.35%   +0.05%     
==========================================
  Files         888      889       +1     
  Lines       26012    26059      +47     
  Branches     9408     9418      +10     
==========================================
+ Hits        25312    25371      +59     
+ Misses        694      682      -12     
  Partials        6        6              

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