Use Implicit Type refactoring should detect type as apparent in declaration for ValueTuple

[jcouv]

See background.

This test broke after the tuple symbol has been updated to unify tuple and ValueTuple.

        [WpfFact, Trait(Traits.Feature, Traits.Features.CodeActionsUseImplicitType)]
        public async Task ValueTupleCreate()
        {
            await TestAsync(
@"using System; class C { static void M() { [|ValueTuple<int, int>|] s = ValueTuple.Create(1, 1); } }" + trivial2uple,
@"using System; class C { static void M() { var s = ValueTuple.Create(1, 1); } }" + trivial2uple,
options: ImplicitTypeWhereApparent(),
parseOptions: TestOptions.Regular.WithTuplesFeature(),
withScriptOption: true);
        }

File is UseImplicitTypeTests.cs.

FYI for @balajikris

[DustinCampbell]

Moving to compiler since it's assigned to @jcouv. Let us know if IDE should take a look.

[jcouv]

@DustinCampbell What's your thoughts on priority?
Given that the common scenario will be to use tuple syntax and not ValueTuple, I'm moving this out of 2.1.

[DustinCampbell]

That makes sense to me. Adding @Pilchie as FYI.