[mlir] Fix missing cmake dependency causing non-deterministic build failure (NFC)

Fixes #74611

Author: joker-eph

mlir/python/CMakeLists.txt

@@ -335,7 +335,8 @@ declare_mlir_dialect_python_bindings(
   TD_FILE dialects/OpenMPOps.td
   SOURCES
     dialects/openmp.py
-  DIALECT_NAME omp)
+  DIALECT_NAME omp
+  DEPENDS omp_common_td)
 
 declare_mlir_dialect_python_bindings(
   ADD_TO_PARENT MLIRPythonSources.Dialects