Compilation error under gcc14 due to missing header fil

[joequant]

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• OS version: Mageia linux
• Compiler version: gcc 14
• Package version: 1.36
• Reproduced by: compile with gcc14
• Input: see link
• Output: see link
• Goal: Compile system

The issue is a missing include file in CaloDigi/Realistic/src/RealisticCaloDigi.cc which causes sort not to be seen

This is fixed in key4hep/key4hep-spack#629 and that patch can be pulled into the release