fix: constrain dropdown width only on specific changes

[jperals]

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[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (2a073a2) 94.19% compared to head (72db0ad) 94.19%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1666   +/-   ##
=======================================
  Coverage   94.19%   94.19%           
=======================================
  Files         650      650           
  Lines       17523    17530    +7     
  Branches     5769     5773    +4     
=======================================
+ Hits        16505    16513    +8     
+ Misses        949      948    -1     
  Partials       69       69           

Files	Coverage Δ
src/internal/components/dropdown/index.tsx	91.66% <100.00%> (+0.36%)	:arrow_up:

... and 1 file with indirect coverage changes

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