io-libs: add ucx dependency to adios2

The SST UCX data plane requires the UCX headers (ucp/api/ucp.h)
at build time. With mvapich2 4.1 these are no longer implicitly
available. Add an explicit BuildRequires on ucx-ohpc and load
the ucx module during the build.

Generated with Claude Code (https://claude.ai/code)

Signed-off-by: Adrian Reber <areber@redhat.com>

Author: adrianreber

components/io-libs/adios2/SPECS/adios2.spec

@@ -37,6 +37,7 @@ BuildRequires: libtool cmake make
 Requires:      lmod%{PROJ_DELIM} >= 7.6.1
 BuildRequires: phdf5-%{compiler_family}-%{mpi_family}%{PROJ_DELIM}
 Requires:      phdf5-%{compiler_family}-%{mpi_family}%{PROJ_DELIM}
+BuildRequires: ucx%{PROJ_DELIM}
 
 BuildRequires: %{python_prefix}-devel %{python_prefix}-setuptools
 BuildRequires: %{python_prefix}-numpy-%{compiler_family}%{PROJ_DELIM}
@@ -68,6 +69,7 @@ cd adios2-build
 %ohpc_setup_compiler
 
 module load phdf5
+module load ucx
 %if "%{compiler_family}" != "intel" && "%{compiler_family}" != "arm1"
 module load openblas
 %endif