deps: cherry-pick 866ee63 from upstream V8

Original commit message:

    [string] Re-enable result caching for String.p.split

    Runtime::kStringSplit's result caching is only enabled when limit equals
    kMaxUInt32.

    BUG=v8:6463

    Review-Url: https://codereview.chromium.org/2923183002
    Cr-Commit-Position: refs/heads/master@{#45724}

Fixes: #13445
PR-URL: #13515
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

deps/v8/src/builtins/builtins-string-gen.cc

@@ -1190,14 +1190,11 @@ TF_BUILTIN(StringPrototypeSplit, StringBuiltinsAssembler) {
       });
 
   // String and integer conversions.
-  // TODO(jgruber): The old implementation used Uint32Max instead of SmiMax -
-  // but AFAIK there should not be a difference since arrays are capped at Smi
-  // lengths.
 
   Callable tostring_callable = CodeFactory::ToString(isolate());
   Node* const subject_string = CallStub(tostring_callable, context, receiver);
   Node* const limit_number =
-      Select(IsUndefined(limit), [=]() { return SmiConstant(Smi::kMaxValue); },
+      Select(IsUndefined(limit), [=]() { return NumberConstant(kMaxUInt32); },
              [=]() { return ToUint32(context, limit); },
              MachineRepresentation::kTagged);
   Node* const separator_string =