style: change create folder button color from success to primary

- Change create folder action color from green (success) to blue (primary)
- More standard color for primary create actions
- Better visual hierarchy and consistency

Author: scott grayson

src/Resources/Pages/ListLibraryItems.php

@@ -49,7 +49,7 @@ protected function getHeaderActions(): array
         $actions[] = Action::make('create_folder')
             ->label('Create Folder')
             ->icon('heroicon-o-folder-plus')
-            ->color('success')
+            ->color('primary')
             ->form([
                 TextInput::make('name')
                     ->label('Folder Name')