Rename via the new renamer API should dismiss renaming tracking

[davkean]

After renaming a type to match the class name, the type gets treated as if it was manually renamed and enters a confusing behavior where I get a code fix to perform the rename that I just performed.

Steps to Reproduce:

1. Checkout and build GitHub/fix programmatic rename project-system#6179
2. Create new Console App (.NET Core) and rename Program.cs -> Bar.cs and say Yes to the prompt

Expected Behavior:

Actual Behavior:

Legacy does not run into this because it uses CodeModel to rename which dismisses the tracking here: http://sourceroslyn.io/#Microsoft.VisualStudio.LanguageServices.Implementation/CodeModel/AbstractCodeModelService.cs,505.

//cc @ryzngard @ocallesp

[ryzngard]

Thanks! Looking

[CyrusNajmabadi]

@ryzngard still needed?

[ryzngard]

Yes, but it's low pri work right now. User experience is a bug, but manageable and low impact.