[ntuple] Improvements of Python interface and tests #15078

Job	Run time
Windows 10 x64 Release	1h 0m 40s
mac13 ARM64 LLVM_ENABLE_ASSERTIONS=On, builtin_zlib=ON	23m 0s
Windows 10 x86 Release	1h 32m 2s
mac14 X64 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	55m 30s
mac15 ARM64 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	26m 14s
fedora40 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	40m 0s
mac-beta ARM64 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	38m 13s
fedora41 LLVM_ENABLE_ASSERTIONS=On	33m 39s
Upload Event Payload	2s
alma8 LLVM_ENABLE_ASSERTIONS=On	41m 11s
alma9 LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	1h 43m 8s
ubuntu22 imt=Off, LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	1h 31m 35s
ubuntu2404 LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	1h 47m 20s
ubuntu2410 LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	1h 59m 2s
debian125 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	28m 35s
alma9 modules_off runtime_cxxmodules=Off	23m 44s
alma9 march_native CMAKE_BUILD_TYPE=RelWithDebInfo, CMAKE_CXX_FLAGS=-march=native, CMAKE_C_FLAGS=-march=native, fortran=OFF	33m 13s
alma9-clang clang LLVM_ENABLE_ASSERTIONS=On, CMAKE_C_COMPILER=clang, CMAKE_CXX_COMPILER=clang++	38m 20s
	15h 55m 28s

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