[flang] Fixed the missing dependency.

My local build with the shared libraries is broken.
I suppose this was introduced by #120374.

`flang/include/flang/Evaluate/constant.h` ends up being included
by `MapInfoFinalization.cpp` via `flang/Lower/DirectivesCommon.h`.
The undefined references are related to `ConstantBase` classes.

Author: vzakhari

flang/lib/Optimizer/OpenMP/CMakeLists.txt

@@ -22,6 +22,7 @@ add_flang_library(FlangOpenMPTransforms
   FIRDialectSupport
   FIRSupport
   FortranCommon
+  FortranEvaluate
   MLIRFuncDialect
   MLIROpenMPDialect
   HLFIRDialect