chore: Change styling in copy-to-clipboard to use flex-start

[avinashbot]

Description

Autoprefixer called this out in one of the consumer packages, that start has limited support. It works fine within our support window, but this seemed like an easier option than to open a review against them and ask them to merge a different browserslist.

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.42%. Comparing base (849bf8f) to head (3d52bbf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4547   +/-   ##
=======================================
  Coverage   97.42%   97.42%           
=======================================
  Files         938      938           
  Lines       29647    29647           
  Branches    10775    10775           
=======================================
  Hits        28884    28884           
  Misses        716      716           
  Partials       47       47           

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