[CSA][cleanup] TNodified return types in interpreter-generator

There were two already TNodified methods, but lacking TNodification
on the variables that they were assigning to.

Now only CallRuntimeN and ExitPoint remain in interpreter-generator.

Bug: v8:6949, v8:9396
Change-Id: I66f74306b88c2254ad8ed1cb2c17187afa4fe0ad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1805644
Auto-Submit: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63809}

src/interpreter/interpreter-generator.cc

@@ -1513,7 +1513,7 @@ IGNITION_HANDLER(LogicalNot, InterpreterAssembler) {
 // object in the accumulator.
 IGNITION_HANDLER(TypeOf, InterpreterAssembler) {
   TNode<Object> value = GetAccumulator();
-  Node* result = Typeof(value);
+  TNode<String> result = Typeof(value);
   SetAccumulator(result);
   Dispatch();
 }
@@ -2831,7 +2831,7 @@ IGNITION_HANDLER(CreateMappedArguments, InterpreterAssembler) {
   BIND(&if_not_duplicate_parameters);
   {
     ArgumentsBuiltinsAssembler constructor_assembler(state());
-    Node* result =
+    TNode<JSObject> result =
         constructor_assembler.EmitFastNewSloppyArguments(context, closure);
     SetAccumulator(result);
     Dispatch();