[ntuple] Detect entry-model mismatch in `LoadEntry` #15725

Job	Run time
Upload Event Payload	3s
Windows 10 x64 Release	1h 16m 3s
mac13 ARM64 LLVM_ENABLE_ASSERTIONS=On, builtin_zlib=ON	35m 4s
Windows 10 x86 Release	1h 35m 10s
fedora40 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	1h 12m 1s
mac14 X64 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	1h 19m 20s
fedora41 LLVM_ENABLE_ASSERTIONS=On	1h 3m 34s
mac15 ARM64 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	1h 9m 20s
alma8 LLVM_ENABLE_ASSERTIONS=On	1h 2m 1s
mac-beta ARM64 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	56m 37s
alma9 LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	1h 36m 31s
ubuntu22 imt=Off, LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	1h 21m 24s
ubuntu2404 LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	2h 53m 29s
ubuntu2410 LLVM_ENABLE_ASSERTIONS=On, CMAKE_BUILD_TYPE=Debug	2h 25m 7s
debian125 LLVM_ENABLE_ASSERTIONS=On, CMAKE_CXX_STANDARD=20	50m 52s
alma9 modules_off runtime_cxxmodules=Off	53m 35s
alma9 march_native CMAKE_BUILD_TYPE=RelWithDebInfo, CMAKE_CXX_FLAGS=-march=native, CMAKE_C_FLAGS=-march=native, fortran=OFF	56m 33s
alma9 arm64 CMAKE_BUILD_TYPE=RelWithDebInfo	55m 36s
alma9-clang clang LLVM_ENABLE_ASSERTIONS=On, CMAKE_C_COMPILER=clang, CMAKE_CXX_COMPILER=clang++	42m 20s
	22h 44m 40s

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