bug #793 Also skip example files with name starting with underscore (chr-hertel)

This PR was merged into the main branch.

Discussion
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 Also skip example files with name starting with underscore

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Docs?         | no
| Issues        |
| License       | MIT

Basically tailored for excluding files like `examples/huggingface/_model-listing.php`

Commits
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f7914ba Also skip example files with name starting with underscore

Author: chr-hertel

examples/runner

@@ -51,7 +51,7 @@ $app = (new SingleCommandApplication('Symfony AI Example Runner'))
             ->name($filter)
             ->exclude('vendor')
             ->sortByName()
-            ->notName('bootstrap.php')
+            ->notName(['bootstrap.php', '_[a-z\-]*.php'])
             ->files();
 
         $io->comment(sprintf('Found %d example(s) to run.', count($examples)));