[Fabric] Textinput double clicking doesn't select text

[TatianaKapos]

Problem Description

Originally from #14357

Double clicking doesn't select text but should

[chrisglein]

We take input from the island and fake window messages, but if those fake messages aren't accounting for the single vs. double click then this wouldn't be linked up to the right behavior. Core input might not have a notion of double click and be leaving that up to the frameworks.