minor #17131 [Finder] Add case insensitive sort (hmoreau)

This PR was squashed before being merged into the 6.2 branch.

Discussion
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[Finder] Add case insensitive sort

Add a new sortByCaseInsensitiveName() method to have case insensitive sorting results.
Like the sortByName(), pass true as its argument to use PHP's case insensitive natural sort order algorithm instead.

Related to symfony/symfony#46126 PR
Replace #16735 PR

Commits
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df9281f [Finder] Add case insensitive sort

Author: javiereguiluz

components/finder.rst

@@ -339,20 +339,24 @@ Sorting Results
 Sort the results by name, extension, size or type (directories first, then files)::
 
     $finder->sortByName();
+    $finder->sortByCaseInsensitiveName();
     $finder->sortByExtension();
     $finder->sortBySize();
     $finder->sortByType();
 
 .. versionadded:: 6.2
 
-    The ``sortByExtension()`` and ``sortBySize()`` methods were introduced in Symfony 6.2.
+    The ``sortByCaseInsensitiveName()``, ``sortByExtension()`` and ``sortBySize()`` methods were introduced in Symfony 6.2.
 
 .. tip::
 
     By default, the ``sortByName()`` method uses the :phpfunction:`strcmp` PHP
     function (e.g. ``file1.txt``, ``file10.txt``, ``file2.txt``). Pass ``true``
     as its argument to use PHP's `natural sort order`_ algorithm instead (e.g.
     ``file1.txt``, ``file2.txt``, ``file10.txt``).
+    
+    The ``sortByCaseInsensitiveName()`` method uses the case insensitive :phpfunction:`strcasecmp` PHP function.
+    Pass ``true`` as its argument to use PHP's case insensitive `natural sort order`_ algorithm instead (the :phpfunction:`strnatcasecmp` PHP function)
 
 Sort the files and directories by the last accessed, changed or modified time::