chore: Increase bundle size limit

[jkuelz]

Description

Prep for some upcoming changes to theming. Needed in order to make theming-core dryrun pass.

The change that contributes to bundle size increase is the switch from resolved values to css variables.

Before
--color-border-divider-default-kwf8i6: #c6c6cd;
--color-border-dropdown-item-default-8qi3jl: #c6c6cd;
After
--color-border-divider-default-ipvpev: var(--color-neutral-250-hdfqdx);
--color-border-dropdown-item-default-uslwbi: var(--color-border-divider-default-ipvpev);

We are making this change in order to make wholistic theming more efficient by relying on css variables inheritance. Rather than redeclaring all 300+ tokens for the wholistic theming that reference tokens offers, this makes it so that only the themed reference tokens (~30) need to be included in the stylesheet, and the rest can be cascade via native CSS variable inheritance. This change also lets us use less declarations in our own css -- the new exports file is about 250 lines shorter, but css variables use more characters, which increases it overall.

Related links, issue #, if available: n/a

How has this been tested?

Dev-pipeline: AwsUi-v3-jkuelz

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 97.12%. Comparing base (c02fc0d) to head (9f3deee).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4086   +/-   ##
=======================================
  Coverage   97.12%   97.12%           
=======================================
  Files         864      864           
  Lines       25325    25325           
  Branches     9137     9137           
=======================================
  Hits        24597    24597           
  Misses        722      722           
  Partials        6        6           

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