feat: Adds suppressible flag for error boundaries

[pan-kot]

Description

Introduces suppressible flag to error boundaries. Now, when a boundary is used with suppressNested=true, only suppressible standalone error boundaries will get disabled.

See: [kmVcAbjoeQB4]

How has this been tested?

• New unit tests

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 97.17%. Comparing base (6a5486b) to head (b1607c1).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4211      +/-   ##
==========================================
+ Coverage   97.16%   97.17%   +0.01%     
==========================================
  Files         879      882       +3     
  Lines       25780    25826      +46     
  Branches     9328     9332       +4     
==========================================
+ Hits        25049    25097      +48     
+ Misses        725      723       -2     
  Partials        6        6              

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[jperals]

Minor: I'd suppress the comma after the first line, and replace "or" with "and" in the second one, since this will affect both built-in error boundaries and nested standalone error boundaries, not one or the other:

When suppressNested is set to true, nested built-in error boundaries and nested standalone error boundaries with suppressible=true are disabled, so the errors propagate further up and are captured by this error boundary.