message: Fix comments in ExecutorDialectToFunctionalConversion pass (NFC).
  The term "aliased" is replaced with comments on the explicit forwarding of fetches to op results.
diff: @@ -76,13 +76,14 @@ LogicalResult LiftIslandOpInnerOpsFromGraph(tf_executor::GraphOp graph) {
  parent_block->getOperations().splice(graph_position, island_body,
  island_body.begin(),
  std::prev(island_body.end()));
  - // Forward inner op aliased results to outer island op result uses.
  + // Forward island fetches (tf_executor.yield operands) to island op result
  + // uses.
  for (auto result :
  llvm::zip(island_op.outputs(), island_op.GetYield().fetches()))
  std::get<0>(result).replaceAllUsesWith(std::get<1>(result));
  }
  - // Forward aliased results in graph to graph result uses.
  + // Forward graph fetches (tf_executor.fetch operands) to graph op result uses.
  for (auto result : llvm::zip(graph.results(), graph.GetFetch().fetches()))
  std::get<0>(result).replaceAllUsesWith(std::get<1>(result));
  