Ship Decision on ASExperimentalTextNode

[bolsinga]

ASExperimentalTextNode is in the code. Should it be on or off?

Added with #259

Looks like 6.79 had this on in PINS. D334230 enabled the XP, but it was shut down. PERF-2781 tracks re-enabling.

[bolsinga]

@Adlai-Holler Do you know the status of this for other clients? Thanks.

[Adlai-Holler]

Google is using ASTextNode2 universally, but last I checked Pinterest was not interested in it. If that's still the case, I'd recommend removing the "experimental" gating around it and simply have it be an option which kind of text node you want. Perhaps a class method on ASTextNode like +coreTextTextNode and +textKitTextNode. cc @wiseoldduck

[bolsinga]

Thanks @Adlai-Holler