Update base for Update on "[devtool] make ETDumpGen use datasink"

This diff enables customized debug data pipeline by making ETDumpGen leverage user-provided datasink.

Details can be found in https://docs.google.com/document/d/1y_m32mKdj-OgLcLUz9TKhBW3PC3bBDYSBbeAH544EfM/edit?tab=t.0#heading=h.jlkcrurw482r

Differential Revision: [D69647096](https://our.internmc.facebook.com/intern/diff/D69647096/)

[ghstack-poisoned]

Author: Gasoonjia