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 97.42%. Comparing base (12d64a9) to head (99fdbe7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4240   +/-   ##
=======================================
  Coverage   97.42%   97.42%           
=======================================
  Files         892      892           
  Lines       26116    26116           
  Branches     9437     9438    +1     
=======================================
  Hits        25444    25444           
+ Misses        666      629   -37     
- Partials        6       43   +37     

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[pan-kot]

nit: There is helper called SimplePage to reduce boilerplate in pages.