[mlir][Flang][NFC] Replace use of vector.insertelement/extractelement

This PR is part of the last step to remove `vector.extractelement` and `vector.insertelement` ops
(RFC: https://discourse.llvm.org/t/rfc-psa-remove-vector-extractelement-and-vector-insertelement-ops-in-favor-of-vector-extract-and-vector-insert-ops)
It replaces `vector.insertelement` and `vector.extractelement` with `vector.insert` and
`vector.extract` in Flang. It looks like no lit tests are impacted.

Author: dcaballe

flang/lib/Optimizer/Builder/PPCIntrinsicCall.cpp

@@ -1685,7 +1685,7 @@ PPCIntrinsicLibrary::genVecExtract(mlir::Type resultType,
   if (!isNativeVecElemOrderOnLE())
     uremOp = convertVectorElementOrder(builder, loc, vecTyInfo, uremOp);
 
-  return builder.create<mlir::vector::ExtractElementOp>(loc, varg0, uremOp);
+  return builder.create<mlir::vector::ExtractOp>(loc, varg0, uremOp);
 }
 
 // VEC_INSERT
@@ -1706,8 +1706,8 @@ PPCIntrinsicLibrary::genVecInsert(mlir::Type resultType,
   if (!isNativeVecElemOrderOnLE())
     uremOp = convertVectorElementOrder(builder, loc, vecTyInfo, uremOp);
 
-  auto res{builder.create<mlir::vector::InsertElementOp>(loc, argBases[0],
-                                                         varg1, uremOp)};
+  auto res{
+      builder.create<mlir::vector::InsertOp>(loc, argBases[0], varg1, uremOp)};
   return builder.create<fir::ConvertOp>(loc, vecTyInfo.toFirVectorType(), res);
 }