FindHDF5: Revert "Add explicit library location instead of guessed ..."

Revert commit e4e309f165 (FindHDF5: Add explicit library location
instead of guessed library name., 2022-03-22, v3.24.0-rc1~375^2).
The old behavior was not a guessed library name, but the name of an
imported target that can contain per-config locations and encode usage
requirements.  Although find modules do not normally return their
imported target names in the `_LIBRARIES` variable, FindHDF5 has done so
since commit 5201a3065b (FindHDF5: use the target rather than the path,
2017-01-04, v3.8.0-rc1~81^2).

Fixes: #23667

Modules/FindHDF5.cmake

@@ -555,8 +555,8 @@ if(NOT HDF5_FOUND AND NOT HDF5_NO_FIND_PACKAGE_CONFIG_FILE)
             endif()
             if( _hdf5_lang_location )
                 set(HDF5_${_lang}_LIBRARY ${_hdf5_lang_location})
-                list(APPEND HDF5_LIBRARIES ${HDF5_${_lang}_LIBRARY})
-                set(HDF5_${_lang}_LIBRARIES ${HDF5_${_lang}_LIBRARY})
+                list(APPEND HDF5_LIBRARIES ${HDF5_${_lang}_TARGET}${_suffix})
+                set(HDF5_${_lang}_LIBRARIES ${HDF5_${_lang}_TARGET}${_suffix})
                 set(HDF5_${_lang}_FOUND TRUE)
             endif()
             if(HDF5_FIND_HL)
@@ -569,8 +569,8 @@ if(NOT HDF5_FOUND AND NOT HDF5_NO_FIND_PACKAGE_CONFIG_FILE)
                 endif()
                 if( _hdf5_lang_hl_location )
                     set(HDF5_${_lang}_HL_LIBRARY ${_hdf5_lang_hl_location})
-                    list(APPEND HDF5_HL_LIBRARIES ${HDF5_${_lang}_HL_LIBRARY})
-                    set(HDF5_${_lang}_HL_LIBRARIES ${HDF5_${_lang}_HL_LIBRARY})
+                    list(APPEND HDF5_HL_LIBRARIES ${HDF5_${_lang}_HL_TARGET}${_suffix})
+                    set(HDF5_${_lang}_HL_LIBRARIES ${HDF5_${_lang}_HL_TARGET}${_suffix})
                     set(HDF5_HL_FOUND TRUE)
                 endif()
                 unset(_hdf5_lang_hl_location)