Replace deprecated random_shuffle with std::shuffle in Min_ellipse_2.h

[LOTUS9679]

Summary of Changes

Replaced the deprecated CGAL::cpp98::random_shuffle with the modern C++11 std::shuffle in Bounding_volumes/include/CGAL/Min_ellipse_2.h.

To enable this change, I:

• Added #include <random>.
• Initialized a std::default_random_engine using the seed from the existing CGAL::Random object to ensure the std::shuffle function works correctly with the existing random number generator logic.
• Verified the fix by building and running the test_Min_ellipse_2 test executable.

Release Management

• Affected package(s): Bounding_volumes
• Issue(s) solved (if any):
• Feature/Small Feature (if any):
• Link to compiled documentation (obligatory for small feature):
• License and copyright ownership: I confirm that I have the right to contribute this code.

[albert-github]

Looks like this proposed pull request not only contains a fix regarding random_shuffle but also (part of) the fix #9199 this should not be the case.

[LOTUS9679]

@albert-github Thank you for the guidance! I have performed a rebase and force-push to clean up the history. This PR now contains only the random_shuffle fix and no unrelated commits.

[MaelRL]

See #9214 (comment).