Merge branch 'master' into demo

chengkun

2025-09-15 3c9050e82e582414dc7b208c8283fe47be37eeba

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<?php
 
namespace PhpOffice\PhpSpreadsheet\Calculation\Engineering;
 
class Constants
{
    /**
     * EULER.
     */
    public const EULER = 2.71828182845904523536;
}