chore: Add tabs scroll snapping

[timogasda]

Description

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

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

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 96.15%. Comparing base (7693793) to head (120c724).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/tabs/smooth-scroll.ts	50.00%	1 Missing ⚠️
src/tabs/tab-header-bar.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2899      +/-   ##
==========================================
- Coverage   96.21%   96.15%   -0.07%     
==========================================
  Files         761      760       -1     
  Lines       21490    21462      -28     
  Branches     7359     7347      -12     
==========================================
- Hits        20676    20636      -40     
- Misses        761      773      +12     
  Partials       53       53              

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