Get ROOT v6-36-00 to work.

[ktf]

No description provided.

[github-actions]

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[alibuild]

Error while checking build/O2/fullCI_slc9 for 8efcae0 at 2025-05-26 19:35:

## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/14331-slc9_x86-64/0/Framework/AnalysisSupport/src/RNTuplePlugin.cxx:20:10: fatal error: ROOT/RFieldBase.hxx: No such file or directory
ninja: build stopped: subcommand failed.

Full log here.

[alibuild]

Error while checking build/O2/fullCI_slc9 for 44214a8 at 2025-05-26 21:56:

## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/14331-slc9_x86-64/0/Framework/AnalysisSupport/src/RNTuplePlugin.cxx:191:30: error: cannot bind non-const lvalue reference of type 'std::vector<const ROOT::Experimental::RFieldBase*>&' to an rvalue of type 'std::vector<const ROOT::Experimental::RFieldBase*>'
/sw/SOURCES/O2/14331-slc9_x86-64/0/Framework/AnalysisSupport/src/RNTuplePlugin.cxx:191:30: error: cannot bind non-const lvalue reference of type 'std::vector<const ROOT::Experimental::RFieldBase*>&' to an rvalue of type 'std::vector<const ROOT::Experimental::RFieldBase*>'
/sw/SOURCES/O2/14331-slc9_x86-64/0/Framework/AnalysisSupport/src/RNTuplePlugin.cxx:587:41: error: no matching function for call to 'ROOT::Experimental::RNTupleReader::Open(ROOT::Experimental::RNTuple&) const'
/sw/SOURCES/O2/14331-slc9_x86-64/0/Framework/AnalysisSupport/src/RNTuplePlugin.cxx:614:43: error: no matching function for call to 'ROOT::Experimental::RNTupleReader::Open(ROOT::Experimental::RNTuple&) const'
/sw/SOURCES/O2/14331-slc9_x86-64/0/Framework/AnalysisSupport/src/RNTuplePlugin.cxx:762:77: error: no matching function for call to 'std::span<int>::span(<brace-enclosed initializer list>)'
ninja: build stopped: subcommand failed.

Full log here.

[ktf]

Not really used, merging.